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95 relations: Address bus, Adjust flag, Advanced Micro Devices, Am5x86, AMD K5, Apricot Computers, Binary-code compatibility, BIOS, Bus (computing), Byte (magazine), Carry flag, Clean room design, Clock rate, COMDEX, Compare-and-swap, Complex instruction set computer, Conventional PCI, CPU cache, CPU core voltage, Cyrix, Cyrix 6x86, Cyrix Cx5x86, Dell, Direction flag, DOSBox, Embedded system, Emulator, Extended Industry Standard Architecture, Fetch-and-add, FLAGS register, Floating-point arithmetic, Floating-point unit, Gigabyte, Harris Corporation, IBM, Industry Standard Architecture, Instruction pipelining, Instruction set architecture, Instructions per second, Integrated circuit, Intel, Intel 80386, Intel 80486 OverDrive, Intel 80486DX2, Intel 8086, Interrupt flag, Kilobyte, Linearizability, List of Intel microprocessors, List of Intel Pentium microprocessors, ..., Local bus, Memory bandwidth, Memory management unit, Microcode, Microprocessor, Microsoft, Motherboard, Motorola, Motorola 68040, MS-DOS, Negative flag, Overflow flag, P5 (microarchitecture), Parity flag, Pentium, Personal computer, Pin grid array, Plug and play, Protected mode, Protection ring, Quad Flat Package, Quake (video game), RapidCAD, Real mode, Reduced instruction set computer, SIMM, Socket 1, Socket 2, Socket 3, Static random-access memory, STMicroelectronics, System Management Mode, Texas Instruments, Trap flag, UMC (company), VESA Local Bus, Video Electronics Standards Association, Virtual 8086 mode, Windows 95, X86, X86 assembly language, X87, Zero flag, 3D computer graphics, 8-bit. Expand index (45 more) »
Address bus
An address bus is a computer bus (a series of lines connecting two or more devices) that is used to specify a physical address.
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Adjust flag
The Adjust flag is a CPU flag in the FLAGS register of all x86-compatible CPUs, and the preceding 8080-family; it is also called the Auxiliary flag and the Auxiliary Carry flag (AC).
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Advanced Micro Devices
Advanced Micro Devices, Inc. (AMD) is an American multinational semiconductor company based in Santa Clara, California, that develops computer processors and related technologies for business and consumer markets.
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Am5x86
The Am5x86 processor is an x86-compatible CPU introduced in 1995 by AMD for use in 486-class computer systems.
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AMD K5
The K5 is AMD's first x86 processor to be developed entirely in-house.
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Apricot Computers
Apricot Computers was a British company that produced desktop personal computers in the mid-1980s.
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Binary-code compatibility
Binary-code compatibility (binary compatible or object-code-compatible) is a property of computer systems meaning that they can run the same executable code, typically machine code for a general-purpose computer CPU.
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BIOS
BIOS (an acronym for Basic Input/Output System and also known as the System BIOS, ROM BIOS or PC BIOS) is non-volatile firmware used to perform hardware initialization during the booting process (power-on startup), and to provide runtime services for operating systems and programs.
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Bus (computing)
In computer architecture, a bus (a contraction of the Latin omnibus) is a communication system that transfers data between components inside a computer, or between computers.
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Byte (magazine)
Byte was an American microcomputer magazine, influential in the late 1970s and throughout the 1980s because of its wide-ranging editorial coverage.
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Carry flag
In computer processors the carry flag (usually indicated as the C flag) is a single bit in a system status (flag) register used to indicate when an arithmetic carry or borrow has been generated out of the most significant ALU bit position.
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Clean room design
Clean-room design (also known as the Chinese wall technique) is the method of copying a design by reverse engineering and then recreating it without infringing any of the copyrights associated with the original design.
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Clock rate
The clock rate typically refers to the frequency at which a chip like a central processing unit (CPU), one core of a multi-core processor, is running and is used as an indicator of the processor's speed.
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COMDEX
COMDEX (an abbreviation of Computer Dealers' Exhibition) was a computer expo trade show held at various locations in the Las Vegas Valley of Nevada, USA, each November from 1979 to 2003.
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Compare-and-swap
In computer science, compare-and-swap (CAS) is an atomic instruction used in multithreading to achieve synchronization.
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Complex instruction set computer
A complex instruction set computer (CISC) is a computer in which single instructions can execute several low-level operations (such as a load from memory, an arithmetic operation, and a memory store) or are capable of multi-step operations or addressing modes within single instructions.
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Conventional PCI
Conventional PCI, often shortened to PCI, is a local computer bus for attaching hardware devices in a computer.
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CPU cache
A CPU cache is a hardware cache used by the central processing unit (CPU) of a computer to reduce the average cost (time or energy) to access data from the main memory.
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CPU core voltage
The CPU core voltage (VCORE) is the power supply voltage supplied to the CPU (which is a digital circuit), GPU, or other device containing a processing core.
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Cyrix
Cyrix Corporation was a microprocessor developer that was founded in 1988 in Richardson, Texas, as a specialist supplier of math coprocessors for 286 and 386 microprocessors.
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Cyrix 6x86
The Cyrix 6x86 (codename M1) is a sixth-generation, 32-bit x86 microprocessor designed by Cyrix and manufactured by IBM and SGS-Thomson.
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Cyrix Cx5x86
Released in August 1995, four months before the more famous Cyrix 6x86, the Cyrix 5x86 was one of the fastest CPUs ever produced for Socket 3 computer systems.
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Dell
Dell (stylized as DELL) is an American multinational computer technology company based in Round Rock, Texas, United States, that develops, sells, repairs, and supports computers and related products and services.
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Direction flag
The direction flag is a flag that controls the left-to-right or right-to-left direction of string processing, stored in the FLAGS register on all x86-compatible CPUs.
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DOSBox
DOSBOX (stylized as DOSBox) is an emulator program which emulates an IBM PC compatible computer running a DOS operating system.
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Embedded system
An embedded system is a computer system with a dedicated function within a larger mechanical or electrical system, often with real-time computing constraints.
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Emulator
In computing, an emulator is hardware or software that enables one computer system (called the host) to behave like another computer system (called the guest).
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Extended Industry Standard Architecture
The Extended Industry Standard Architecture (in practice almost always shortened to EISA and frequently pronounced "eee-suh") is a bus standard for IBM PC compatible computers.
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Fetch-and-add
In computer science, the fetch-and-add CPU instruction (FAA) atomically increments the contents of a memory location by a specified value.
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FLAGS register
The FLAGS register is the status register in Intel x86 microprocessors that contains the current state of the processor.
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Floating-point arithmetic
In computing, floating-point arithmetic is arithmetic using formulaic representation of real numbers as an approximation so as to support a trade-off between range and precision.
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Floating-point unit
A floating-point unit (FPU, colloquially a math coprocessor) is a part of a computer system specially designed to carry out operations on floating point numbers.
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Gigabyte
The gigabyte is a multiple of the unit byte for digital information.
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Harris Corporation
Harris Corporation is an American technology company, defense contractor and information technology services provider that produces wireless equipment, tactical radios, electronic systems, night vision equipment and both terrestrial and spaceborne antennas for use in the government, defense and commercial sectors.
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IBM
The International Business Machines Corporation (IBM) is an American multinational technology company headquartered in Armonk, New York, United States, with operations in over 170 countries.
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Industry Standard Architecture
Industry Standard Architecture (ISA) is a retronym term for the 16-bit internal bus of IBM PC/AT and similar computers based on the Intel 80286 and its immediate successors during the 1980s.
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Instruction pipelining
Instruction pipelining is a technique for implementing instruction-level parallelism within a single processor.
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Instruction set architecture
An instruction set architecture (ISA) is an abstract model of a computer.
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Instructions per second
Instructions per second (IPS) is a measure of a computer's processor speed.
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Integrated circuit
An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small flat piece (or "chip") of semiconductor material, normally silicon.
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Intel
Intel Corporation (stylized as intel) is an American multinational corporation and technology company headquartered in Santa Clara, California, in the Silicon Valley.
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Intel 80386
The Intel 80386, also known as i386 or just 386, is a 32-bit microprocessor introduced in 1985.
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Intel 80486 OverDrive
Intel's i486 OverDrive processors are a category of various Intel 80486s that were produced with the designated purpose of being used to upgrade personal computers.
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Intel 80486DX2
The Intel i486DX2, rumored as 80486DX2 (later renamed IntelDX2) is a CPU produced by Intel that was introduced in 1992.
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Intel 8086
The 8086 (also called iAPX 86) is a 16-bit microprocessor chip designed by Intel between early 1976 and mid-1978, when it was released.
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Interrupt flag
IF (Interrupt Flag) is a system flag bit in the x86 architecture's FLAGS register, which determines whether or not the CPU will handle maskable hardware interrupts.
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Kilobyte
The kilobyte is a multiple of the unit byte for digital information.
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Linearizability
In concurrent programming, an operation (or set of operations) is atomic, linearizable, indivisible or uninterruptible if it appears to the rest of the system to occur at once without being interrupted.
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List of Intel microprocessors
This generational list of Intel processors attempts to present all of Intel's processors from the pioneering 4-bit 4004 (1971) to the present high-end offerings, which include the 64-bit Itanium 2 (2002), Intel Core i9, and Xeon E3 and E5 series processors (2015).
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List of Intel Pentium microprocessors
The Intel Pentium brand refers to mainstream x86-architecture microprocessors from Intel.
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Local bus
In computer architecture, a local bus is a computer bus that connects directly, or almost directly, from the CPU to one or more slots on the expansion bus.
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Memory bandwidth
Memory bandwidth is the rate at which data can be read from or stored into a semiconductor memory by a processor.
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Memory management unit
A memory management unit (MMU), sometimes called paged memory management unit (PMMU), is a computer hardware unit having all memory references passed through itself, primarily performing the translation of virtual memory addresses to physical addresses.
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Microcode
Microcode is a computer hardware technique that imposes an interpreter between the CPU hardware and the programmer-visible instruction set architecture of the computer.
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Microprocessor
A microprocessor is a computer processor that incorporates the functions of a central processing unit on a single integrated circuit (IC), or at most a few integrated circuits.
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Microsoft
Microsoft Corporation (abbreviated as MS) is an American multinational technology company with headquarters in Redmond, Washington.
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Motherboard
A motherboard (sometimes alternatively known as the mainboard, system board, baseboard, planar board or logic board, or colloquially, a mobo) is the main printed circuit board (PCB) found in general purpose microcomputers and other expandable systems.
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Motorola
Motorola, Inc. was an American multinational telecommunications company founded on September 25, 1928, based in Schaumburg, Illinois.
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Motorola 68040
The Motorola 68040 ("sixty-eight-oh-forty") is a 32-bit microprocessor from Motorola, released in 1990.
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MS-DOS
MS-DOS (acronym for Microsoft Disk Operating System) is an operating system for x86-based personal computers mostly developed by Microsoft.
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Negative flag
In a computer processor the negative flag or sign flag is a single bit in a system status (flag) register used to indicate whether the result of the last mathematical operation resulted in a value in which the most significant bit was set.
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Overflow flag
In computer processors, the overflow flag (sometime called V flag) is usually a single bit in a system status register used to indicate when an arithmetic overflow has occurred in an operation, indicating that the signed two's-complement result would not fit in the number of bits used for the operation (the ALU width).
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P5 (microarchitecture)
The first Pentium microprocessor was introduced by Intel on March 22, 1993.
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Parity flag
In computer processors the parity flag indicates if the number of set bits is odd or even in the binary representation of the result of the last operation.
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Pentium
Pentium is a brand used for a series of x86 architecture-compatible microprocessors produced by Intel since 1993.
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Personal computer
A personal computer (PC) is a multi-purpose computer whose size, capabilities, and price make it feasible for individual use.
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Pin grid array
A pin grid array, often abbreviated PGA, is a type of integrated circuit packaging.
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Plug and play
In computing, a plug and play (PnP) device or computer bus, is one with a specification that facilitates the discovery of a hardware component in a system without the need for physical device configuration or user intervention in resolving resource conflicts.
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Protected mode
In computing, protected mode, also called protected virtual address mode, is an operational mode of x86-compatible central processing units (CPUs).
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Protection ring
In computer science, hierarchical protection domains, often called protection rings, are mechanisms to protect data and functionality from faults (by improving fault tolerance) and malicious behaviour (by providing computer security).
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Quad Flat Package
A QFP or Quad Flat Package is a surface mount integrated circuit package with "gull wing" leads extending from each of the four sides.
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Quake (video game)
Quake is a first-person shooter video game, developed by id Software and published by GT Interactive in 1996.
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RapidCAD
RapidCAD is a specially packaged Intel 486DX and a dummy floating point unit (FPU) designed as pin-compatible replacements for an Intel 80386 processor and 80387 FPU.
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Real mode
Real mode, also called real address mode, is an operating mode of all x86-compatible CPUs.
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Reduced instruction set computer
A reduced instruction set computer, or RISC (pronounced 'risk'), is one whose instruction set architecture (ISA) allows it to have fewer cycles per instruction (CPI) than a complex instruction set computer (CISC).
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SIMM
A SIMM, or single in-line memory module, is a type of memory module containing random-access memory used in computers from the early 1980s to the late 1990s.
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Socket 1
Socket 1 was the second of a series of standard CPU sockets created by Intel into which various x86 microprocessors were inserted.
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Socket 2
Socket 2 was one of the series of CPU sockets into which various x86 microprocessors were inserted.
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Socket 3
Socket 3 was a series of CPU Sockets for various x86 microprocessors.
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Static random-access memory
Static random-access memory (static RAM or SRAM) is a type of semiconductor memory that uses bistable latching circuitry (flip-flop) to store each bit.
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STMicroelectronics
STMicroelectronics is a French-Italian multinational electronics and semiconductor manufacturer headquartered in Geneva, Switzerland.
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System Management Mode
System Management Mode (SMM, sometimes called ring -2 in reference to protection rings) is an operating mode of x86 central processor units (CPUs) in which all normal execution, including the operating system, is suspended.
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Texas Instruments
Texas Instruments Inc. (TI) is an American technology company that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally.
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Trap flag
A trap flag permits operation of a processor in single-step mode.
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UMC (company)
United Microelectronics Corporation, commonly known as UMC, is a Taiwanese company which is based in Hsinchu, Taiwan.
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VESA Local Bus
The VESA Local Bus (usually abbreviated to VL-Bus or VLB) was a short-lived expansion bus that was mostly used in personal computers.
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Video Electronics Standards Association
VESA (/ˈviːsə/), formally known as Video Electronics Standards Association, is a technical standards organization for computer display standards.
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Virtual 8086 mode
In the 80386 microprocessor and later, virtual 8086 mode (also called virtual real mode, V86-mode or VM86) allows the execution of real mode applications that are incapable of running directly in protected mode while the processor is running a protected mode operating system.
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Windows 95
Windows 95 (codenamed Chicago) is a consumer-oriented operating system developed by Microsoft.
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X86
x86 is a family of backward-compatible instruction set architectures based on the Intel 8086 CPU and its Intel 8088 variant.
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X86 assembly language
x86 assembly language is a family of backward-compatible assembly languages, which provide some level of compatibility all the way back to the Intel 8008 introduced in April 1972.
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X87
x87 is a floating point-related subset of the x86 architecture instruction set.
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Zero flag
The zero flag is a single bit flag that is a central feature on most conventional CPU architectures (including x86, ARM, PDP-11, 68000, 6502, and numerous others).
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3D computer graphics
3D computer graphics or three-dimensional computer graphics, (in contrast to 2D computer graphics) are graphics that use a three-dimensional representation of geometric data (often Cartesian) that is stored in the computer for the purposes of performing calculations and rendering 2D images.
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8-bit
8-bit is also a generation of microcomputers in which 8-bit microprocessors were the norm.
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Redirects here:
486 (Intel), 486 (PC), 486 (computer), 486 (computing), 486 DX, 486 processor, 486DX, 486dx, 80-486, 80486, 80486DX, 80486SX, I486, I80486, Intel 486, Intel 80486 (microarchitecture), Intel 80486DX, Intel I486, Intel i486, Intel i486 (Processor), SL-enhanced 486.
References
[1] https://en.wikipedia.org/wiki/Intel_80486
