4-letter words containing 5
- 1541 — Commodore 1541
- 1581 — Commodore 1581
- 4510 — (processor) A 65CE02 with two 6526 IO controllers. Used in the Commodore 65.
- 5ess — Number 5 Electronic Switching System
- 6501 — (hardware) An eight-bit microprocessor, the first sold by MOS Technology. The 6501 pin-compatible with the Motorola 6800 and was the first member of the 650x series. It had an on-chip clock oscillator. See also 6502.
- 6502 — (hardware) An eight-bit microprocessor designed by MOS Technology around 1975 and made by Rockwell. Unlike the Intel 8080 and its kind, the 6502 had very few registers. It was an 8-bit processor, with 16-bit address bus. Inside was one 8-bit data register (accumulator), two 8-bit index registers and an 8-bit stack pointer (stack was preset from address 256 to 511). It used these index and stack registers effectively, with more addressing modes, including a fast zero-page mode that accessed memory locations from address 0 to 255 with an 8-bit address (it didn't have to fetch a second byte for the address). Back when the 6502 was introduced, RAM was actually faster than CPUs, so it made sense to optimise for RAM access rather than increase the number of registers on a chip. The 6502 was used in the BBC Microcomputer, Apple II, Commodore, Apple Computer and Atari personal computers. Steve Wozniak described it as the first chip you could get for less than a hundred dollars (actually a quarter of the 6800 price). The 6502's indirect jump instruction, JMP (xxxx), was broken. If the address was hexadecimal xxFF, the processor would not access the address stored in xxFF and xxFF + 1, but rather xxFF and xx00. The 6510 did not fix this bug, nor was it fixed in any of the other NMOS versions of the 6502 such as the 8502. Bill Mensch at Western Design Center was probably the first to fix it, in the 65C02. The 6502 also had undocumented instructions. The 65816 is an expanded version of the 6502. There is a 6502 assembler by Doug Jones <[email protected]> which supports macros and conditional features and can be used for linkage editing of object files. It requires Pascal. See also cross-assembler, RTI, Small-C.
- 650x — (hardware) A family of microprocessors from MOS Technologies, based on the design of the Motorola 6800 (introduced around 1975). The family included the 6502 used in several early personal computers.
- 6510 — (processor) A successor to the 6502. The 6510 was used in the Commodore 64C. Successors included the 8502 used in the Commodore 128 line.
- 8051 — Intel 8051
- 8052 — Intel 8051
- 8250 — (hardware) A UART that can operate at a maximum of 9600 baud. The 8250 is used in IBM PC XT computers. It works in an IBM PC AT under DOS but generates unwanted interrupts when used at 9600 baud. The IBM PC BIOS has a bug fix for this chip.
- 8450 — (hardware) A serial IO chip with a one-byte FIFO. The 8450 was introduced with the Intel 8080.
- 8514 — (hardware) An IBM graphics display standard supporting a resolution of 1024 x 768 pixels with 256 colours at 43.5 Hz (interlaced), or 640 x 480 at 60 Hz interlaced. 8514 was introduced at the same time as VGA and was superseded by XGA.
- h5n1 — a highly contagious, often deadly type of bird flu virus that is found mainly in birds and occasionally in other animals and humans
- ld50 — the amount of ionizing radiation that will kill 50 per cent of a population in a specified time
- ops5 — (language) A programming language for rule-based production systems. A rule consists of pre-condition(s) and a resulting action. The system checks its working memory to see if there are rules whose pre-conditions are satisfied, if so, the action in one selected satisfied rule is executed. There is a public domain implementation of an OPS5 interpreter written by Charles L. Forgy <[email protected]> in 1977. It was first implemented in Lisp and later in BLISS. It was also ported to Common Lisp by George Wood and Jim Kowalski. See also C5, OPS83, OPS4, OPS5+, OPS83. Inference Engine Tech, Cambridge MA.
- rg58 — (networking, hardware) A common, low-impedance (52 ohm), quarter-inch diameter coaxial cable with BNC connectors, used for 10base2 Ethernet wiring, sometimes called "cheapernet" in comparison with "full spec" RG8 cabling. A member of the "Radio Guide" series.
- v.25 — (communications, standard) A standard allowing an auto-answer modem to determine the correct modulation standard to use.
- v.35 — (communications, standard) The ITU-T standard for data transmission at 48 kilobits per second over 60 - 108 KHz group band circuits. It contains the 34-pin V.34 connector specifications normally implemented on a modular RJ-45 connector.
- x.25 — (protocol, standard) An ITU-T standard protocol suite for the DTE-DCE interface in a packet-switched network, approved by ISO. X.25 defines standard physical layer, data link layer and network layers (layers 1 through 3). It was developed to describe how data passes into and out of public data communications networks. X.25 networks are in use throughout the world. Document: ISO 8208. Several other ITU-T recommendations are relevant to packet switching: X.3, X.28, X.29, X.75.
- x.75 — The ITU-T standard specifying the protocols for communication between two PSDNs.
On this page, we collect all 4-letter words with letter 5. It’s easy to find right word with a certain length. It is the easiest way to find 4-letter word that contains 5 to use in Scrabble or Crossword puzzles.