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The following is a list of 7400-series digital logic integrated circuits.In the mid-1960s, the original 7400-series integrated circuits were introduced by Texas Instruments with the prefix "SN" to create the name SN74xx.
The Soviet Union started manufacturing TTL ICs with 7400-series pinout in the late 1960s and early 1970s, such as the K155ЛA3, which was pin-compatible with the 7400 part available in the United States, except for using a metric spacing of 2.5 mm between pins instead of the 0.1 inches (2.54 mm) pin-to-pin spacing used in the west. [107]
The signal standard and pinout are backward-compatible with CGA, allowing EGA monitors to be used on CGA cards and vice versa. Early VGA cards also used this connector. VGA connector (DE-15) Became a nearly ubiquitous analog computer display connector after first being introduced with IBM x86 machines. Older VGA connectors were DE-9 (9-pin).
Floppy drive A/B twist pinout Wire Controller Drive A Drive B Description 1-9 1-9 1-9 1-9 No Change 10 10 16 10 Motor Enable Drive 0/1 11 11 15 11 Ground, No Change 12 12 14 12 Drive Select 0/1 13 13 13 13 Ground, No Change 14 14 12 14 Drive Select 0/1 15 15 11 15 Ground, No Change 16 16 10 16 Motor Enable Drive 0/1 17-34 17-34 17-34 17-34
The connector on the Amiga 1000 uses crossover wiring, similar to a telephone handset. The connector wiring on the Apple computers, however, requires a polarized straight-through pinout. Using a telephone handset cable instead of the supplied cable could short out the +5 volt DC supply and damage the Apple computer or the keyboard. [12]
To begin communication, the SPI main first selects a sub device by pulling its CS low. (Note: the bar above CS indicates it is an active low signal, so a low voltage means "selected", while a high voltage means "not selected")
Some common pinouts [20] for 2.54 mm (0.100 in) pin headers are: ARM 2×10 pin (or sometimes the older 2×7), used by almost all ARM-based systems; MIPS EJTAG (2×7 pin) used for MIPS based systems; 2×5 pin Altera ByteBlaster-compatible JTAG extended by multiple vendors; 2×5 pin AVR extends Altera JTAG with SRST (and in some cases TRST and an ...
It defined five module types, each implementing different pinout configurations and feature sets on one or two 220-pin connectors. It also defined 2 module sizes (later expanded to 4) to serve more applications while maintaining compatibility within each module type. [2] COM Express is used in railway, industrial, and military applications.
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