The Intel 8048 microcontroller (µC) (MCS-48), Intel's first microcontroller, was used in the Magnavox Odyssey² video game console, the Roland Jupiter-4 and Roland ProMars analog synthesizers, and (in its 8042 variant) in the original IBM PC keyboard. A microcontroller (also MCU or µC is a functional Computer system-on-a- chip. The Magnavox Odyssey², known in Europe as the Philips Videopac G7000, in Brazil as the Philips Odyssey, in the United States The Roland Jupiter 4 was an Analog synthesizer manufactured by the Roland Corporation of Japan between 1978 and 1981 An analog synthesizer is a Synthesizer that uses analog circuits and Analog computer techniques to generate sound electronically The IBM PC keyboard and its derivative Computer keyboards are standardized The 8048 is probably the most prominent member of Intel's MCS-48 family of microcontrollers. It was inspired by, and is somewhat similar to, the Fairchild F8 microprocessor. In Computing, the F8 was an 8-bit Microprocessor created by Fairchild Semiconductor. A microprocessor incorporates most or all of the functions of a Central processing unit (CPU on a single Integrated
The 8048 has a Modified Harvard architecture, with internal or external program ROM and 64–256 bytes of internal (on-chip) RAM. The Modified Harvard Architecture is a variation of the Harvard computer architecture that allows the contents of the instruction memory to be accessed as if it were data The I/O is mapped into its own address space, separate from programs and data. In Computing, input/output, or I/O, refers to the communication between an Information processing system (such as a Computer) and the outside In Computing, an address space defines a range of discrete addresses each of which may correspond to a physical or virtual Memory register, a network host Though the 8048 was eventually replaced by the very popular Intel 8051/8031, even at the turn of the millennium it remains quite popular, due to its low cost, wide availability, memory efficient one-byte instruction set, and mature development tools. The Intel 8051 is a Harvard architecture, single chip Microcontroller (µC which was developed by Intel in 1980 for use in Embedded systems Because of this it is much used in high-volume consumer electronics devices such as TV sets, TV remotes, toys, and other gadgets where cost-cutting is essential.
The 8049 has 2 KiB of masked ROM (the 8748 and 8749 had EPROM) that can be replaced with a 4 KiB external ROM, as well as 128 bytes of RAM and 27 I/O ports. The Intel 8748 is a member of Intel MCS-48 family of 8-bit Microcontrollers It was originally released in 1976 The Intel 8048 Microcontroller (µC (MCS-48 Intel's first microcontroller was used in the Magnavox Odyssey² Video game console, the Roland Jupiter-4 An EPROM, or E rasable P rogrammable '''''R'''ead-'''O'''nly '''M'''emory'', is a type of memory chip that retains its A byte (pronounced "bite" baɪt is the basic unit of measurement of information storage in Computer science. In Computing, input/output, or I/O, refers to the communication between an Information processing system (such as a Computer) and the outside The µC's oscillator block divides the incoming clock into 15 internal phases, thus with its 11 MHz max. Oscillation is the repetitive variation typically in Time, of some measure about a central value (often a point of Equilibrium) or between two or more different states The hertz (symbol Hz) is a measure of Frequency, informally defined as the number of events occurring per Second. crystal one gets 0. 73 MIPS (of one-clock instructions). Instructions per second (IPS is a measure of a Computer 's processor speed An instruction set is a list of all the instructions and all their variations that a processor can execute Some instructions are single byte/cycle ones, but a large amount of opcodes need two cycles and/or two bytes, so the raw performance would be closer to 0. 5 MIPS.
Reportedly, most if not all IBM PC AT and PS/2 keyboards contain a variant of the 8049AH microcontroller. The IBM Personal Computer/AT, more commonly known as the IBM AT and also sometimes called the PC AT or PC/AT, was IBM 's second-generation The PS/2 connector is used for connecting some keyboards and mice to a PC compatible computer system An 8042 is located in the PC, and can be accessed through port 0x60 and 0x64 (PII+ PCs have it built into the chipset Super I/O). In Mathematics and Computer science, hexadecimal (also base -, hexa, or hex) is a Numeral system with a In Mathematics and Computer science, hexadecimal (also base -, hexa, or hex) is a Numeral system with a The Pentium II brand refers to Intel 's sixth-generation Microarchitecture (" Intel P6 " and x86 -compatible Microprocessors A chipset is a group of Integrated circuits or chips that are designed to work together and are usually marketed as a single product " Super I/O " is a class of I/O controller Integrated circuits that began to be used on Personal computer Motherboards in the late 1980s originally Also 8042 controls A20 line and "soft boot" to switch Intel 80286 from protected to real mode. The A20 or addressing line 20 is one of the plethora of Electrical lines that make up the System bus of an X86 -based computer system The Intel 286, introduced on February 1, 1982, (originally named 80286, and also called iAPX 286 in the programmer's manual In computing protected mode, also called protected virtual address mode, is an operational mode of X86 -compatible Central processing units (CPU
Another variant, the ROM-less 8035, was used in Nintendo's arcade game Donkey Kong. is a Multinational corporation headquartered in Kyoto Japan founded on is an Arcade game developed by Nintendo, and released in. It is an early example of the platform genre as the Gameplay focuses on maneuvering the main Although not being a typical application for a microcontroller, its purpose was to generate the background music of the game.
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This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL. The Intel 8051 is a Harvard architecture, single chip Microcontroller (µC which was developed by Intel in 1980 for use in Embedded systems The Free On-line Dictionary of Computing ( FOLDOC) is an online searchable encyclopedic Dictionary of Computing subjects The GNU Free Documentation License ( GNU FDL or simply GFDL) is a Copyleft License for free documentation designed by the Free Software
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