7-letter words containing 4
- 2,4,5-t — a light-tan, water-insoluble solid, C 8 H 5 Cl 3 O 3 , used chiefly for killing weeds.
- 68lc040 — Motorola 68LC040
- 82430hx — Triton II
- 82430mx — Mobile Triton
- 82430vx — Triton VX
- base 64 — (file format, algorithm) A file format using 64 ASCII characters to encode the six bit binary data values 0-63. To convert data to base 64, the first byte is placed in the most significant eight bits of a 24-bit buffer, the next in the middle eight, and the third in the least significant eight bits. If there a fewer than three bytes to encode, the corresponding buffer bits will be zero. The buffer is then used, six bits at a time, most significant first, as indices into the string "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" and the indicated character output. If there were only one or two input bytes, the output is padded with two or one "=" characters respectively. This prevents extra bits being added to the reconstructed data. The process then repeats on the remaining input data. Base 64 is used when transmitting binary data through text-only media such as electronic mail, and has largely replaced the older uuencode encoding.
- bjc4000 — A colour bubble jet printer from Canon. Released in September 1994. It features 720 x 360 dots per inch in black and white mode and 360 x 360 in colour. It has two cartridges: one for black and one for the three primary colours so it prints true black when printing in colour.
- chip-48 — A reimplementation of CHIP-8 for the HP-48 calculator by Andreas Gustafson <[email protected]>. Posted to news:comp.sys.handhelds in Sep 1990.
- delta-4 — Definition and Design of an open Dependable Distributed system architecture. An Esprit project investigating the achievement of dependability in open distributed systems, including real-time systems.
- eia-422 — (communications, standard) (Formerly "RS-422") An EIA serial line standard which specifies 4-wire, full-duplex, differential line, multi-drop communications. The mechanical connections for this interface are specified by EIA-449. The maximum cable length is 1200m. Maximum data rates are 10Mbps at 1.2m or 100Kbps at 1200m. EIA-422 cannot implement a truly multi-point communications network (such as with EIA-485), although only one driver can be connected to up to ten receivers. The best use of EIA-422 is probably in EIA-232 extension cords.
- eia-423 — (communications, standard) (Formerly "RS-423") An EIA serial line standard which specifies single ended communication. The mechanical connections for this interface are specified by EIA-449. Although it was originally intented as a successor of EIA-232 it is not widely used. The EIA-232 standard has its limits at 20kbps and 1.5m. EIA-423 can have a cable lenght of 1200m, and achieve a data rate of 100Kbps. When no data is being transmitted, the serial line is at a logical zero (+3 to +15 Volts). A logical one is represented as a signal level of -15 to -3 Volts. In practise, one often finds signals which switch between nominally +4.5 and +0.5 Volts. Such signals are large by modern standards, and because the impedance of the circuits is relatively high, the allowable bit rate is modest. The data is preceded by a start bit which is always a logical one. There may be seven or eight bits of data, possibly followed by an even or odd parity bit and one or two stop bits. A "break" condition is a continuous logical one on the line which is what would be observed if nothing was connected.
- eia-449 — (communications, standard) (Formerly "RS-449") An EIA standard for a 37-pin or 9-pin D-type connector (functional- and mechanical characteristics), usually used with EIA-422 or EIA-423 electrical specifications.
- eia-485 — (communications, standard) (Formerly "RS-485") An EIA serial line standard which specifies 2-wire, half-duplex, differential line, multi-point communications. Maximum cable length is 1200m. Maximum data rates are 10Mbps at 1.2m or 100Kbps at 1200m. EIA-485 can implement a truly multi-point communications network, and specifies up to 32 drivers and 32 receivers on a single (2-wire) bus.
- group 4 — (protocol, compression) (G4) The CCITT fax protocol which uses data compression and allows a variety of file types (e-mail, pictures, PostScript, etc.) to be transmitted over digital (ISDN) telephone lines. The Group 4 protocol was published by CCITT in 1993. Full details of the protocol are available from ITU-T. See also Group 3.
- ibm 704 — (computer) A large, scientific computer made by IBM and used by the largest commercial, government and educational institutions. The IBM 704 had 36-bit memory words, 15-bit addresses and instructions with one address. A few index register instructions had the infamous 15-bit decrement field in addition to the 15-bit address. The 704, and IBM 709 which had the same basic architecture, represented a substantial step forward from the IBM 650's magnetic drum storage as they provided random access at electronic speed to core storage, typically 32k words of 36 bits each. A typical 700 series installation would be in a specially built room of perhaps 1000 to 2000 square feet, with cables running under a raised floor and substantial air conditioning. There might be up to eight magnetic tape transports, each about 3 x 3 x 6 feet, on one or two "channels." The 1/2 inch tape had seven tracks and moved at 150 inches per second, giving a read/write speed of 15,000 six bit characters (plus parity) per second. In the centre would be the operator's console consisting of cabinets and tables for storage of tapes and boxes of cards; and a card reader, a card punch, and a line printer, each perhaps 4 x 4 x 5 feet in dimension. Small jobs could be entered via punched cards at the console, but as a rule the user jobs were transferred from cards to magnetic tape by off-line equipment and only control information was entered at the console (see SPOOL). Before each job, the operating system was loaded from a read-only system tape (because the system in core could have been corrupted by the previous user), and then the user's program, in the form of card images on the input tape, would be run. Program output would be written to another tape (typically on another channel) for printing off-line. Well run installations would transfer the user's cards to tape, run the job, and print the output tape with a turnaround time of one to four hours. The processing unit typically occupied a position symmetric but opposite the operator's console. Physically the largest of the units, it included a glass enclosure a few feet in dimension in which could be seen the "core" about one foot on each side. The 36-bit word could hold two 18-bit addresses called the "Contents of the Address Register" (CAR) and the "Contents of the Decrement Register" (CDR). On the opposite side of the floor from the tape drives and operator's console would be a desk and bookshelves for the ever-present (24 hours a day) "field engineer" dressed in, you guessed it, a grey flannel suit and tie. The maintenance of the many thousands of vacuum tubes, each with limited lifetime, and the cleaning, lubrication, and adjustment of mechanical equipment, was augmented by a constant flow of bug reports, change orders to both hardware and software, and hand-holding for worried users. The 704 was oriented toward scientific work and included floating point hardware and the first Fortran implementation. Its hardware was the basis for the requirement in some programming languages that loops must be executed at least once. The IBM 705 was the business counterpart of the 704. The 705 was a decimal machine with a circular register which could hold several variables (numbers, values) at the same time. Very few 700 series computers remained in service by 1965, but the IBM 7090, using transistors but similar in logical structure, remained an important machine until the production of the earliest integrated circuits.
- layer 4 — transport layer
- mc68040 — Motorola 68040
- pc-1834 — (computer) An IBM PC-like computer, using a K1810 WM 86 Intel 8086 clone from the formerly known Eastern bloc, introduced in 1988.
- rfc 854 — (networking, standard) The RFC defining the telnet protocol.
- sds 940 — Xerox Data Systems Model 940
- snobol4 — (language) A quite distinct descendant of SNOBOL, developed by Griswold et al in 1967. SNOBOL4 is declarative with dynamic scope. Patterns are first-class data objects that can be constructed by concatenation and alternation. Success and failure are used for flow control. Delayed (unevaluated) expressions can be used to implement recursion. It has a table data type. Strings generated at run time can be treated as programs and executed. See also vanilla.
- ultra64 — (hardware, games) A Nintendo games machine, unveiled in May 1995.
- v.42bis — (communications, standard) An extension of the ITU-T V.42 standard modem protocol to included compression using a Lempel-Ziv related technique, which detects frequently occurring character strings and replaces them with tokens. This is similar to the Unix compress utility. Typical compression for text is 50% or better; with nearly 20% gain from synchronous conversion this gives reduces transmission time by almost 60%.
- xds 940 — Xerox Data Systems Model 940
- zip + 4 — a zip code of nine digits, used to facilitate accurate and prompt delivery of mail.
On this page, we collect all 7-letter words with letter 4. It’s easy to find right word with a certain length. It is the easiest way to find 7-letter word that contains 4 to use in Scrabble or Crossword puzzles.