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The most common usage is the DB25, using TASCAM's pinout (now standardised in AES59 by the Audio Engineering Society [1]). To avoid the possibility of bent pins on fixed equipment, the male connector is generally fitted to the cabling and the female connector to the equipment.
A male D-subminiature connector used for an RS-232 serial port on an IBM PC compatible computer along with the serial port symbol. A serial port is a serial communication interface through which information transfers in or out sequentially one bit at a time. [1]
For example, DB-25 denotes a D-sub with a 25-position shell size and a 25-position contact configuration. The contacts in each row of these connectors are spaced 326/3000 of an inch apart, or approximately 0.1087 inches (2.76 mm), and the rows are spaced 0.112 inches (2.84 mm) apart; the pins in the two rows are offset by half the distance ...
Pin No (DB25) Pin No (36 pin) Signal name Direction Register - bit Inverted 1 1 Strobe In/out Control-0 Yes 2 2 Data0 Out Data-0 No 3 3 Data1 Out Data-1 No 4 4 Data2 Out Data-2 No 5 5 Data3 Out Data-3 No 6 6 Data4 Out Data-4 No 7 7 Data5 Out Data-5 No 8 8 Data6 Out Data-6 No 9 9 Data7 Out Data-7 No 10 10 Ack In Status-6 No 11 11 Busy In Status-7
So to send the digit 9, pins 14 (1) and 17 (8) would be put to the "mark" state, whereas the digit 6 would mark pins 15 and 16. With each digit, the host system data terminal equipment (DTE, typically a computer) would raise pin 2 to indicate the digit was ready for the dialler to read. When the dialler completed the read, it would raise pin 5 ...
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Male pinout of a 25-pin serial port (D-subminiature, DB-25) commonly found on 1980s computers. The following table lists commonly used RS-232 signals (called "circuits" in the specifications) and their pin assignments on the recommended DB-25 connectors [14] (see Serial port pinouts for other commonly used connectors not defined by the standard).
RS-232 connector (D-Sub DB-25 variant) Many communication systems were generally designed to connect two integrated circuits on the same printed circuit board, connected by signal traces on that board (rather than external cables). Integrated circuits are more expensive when they have more pins. To reduce the number of pins in a package, many ...