Search results
Results from the WOW.Com Content Network
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).
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]
The above naming pattern was not always followed. Because personal computers first used DB-25 connectors for their serial and parallel ports, when the PC serial port began to use 9-pin connectors, they were often labeled as DB-9 instead of DE-9 connectors, due to an ignorance of the fact that B represented a shell size. It is now common to see ...
Pinout; Pin 1: DTR output nonstandard: RS-232: Pin 2 +3.3 V: VCC: Pin 3: RS-232 input, Signal T RxD: RxD: Pin 4: RTS RS-232 output: RTS: Pin 5: RS-232 output, Signal R TxD: TxD: Pin 6: CTS RS-232 input: CTS: Pin 7: HotSync IRQ - +3.3 V to press the HotSync button: HOTSYNC: Pin 8: Peripheral id. The Palm modem connects this pin to pin 2 to 20 ...
These UARTs' maximum standard serial port speed is 9600 bits per second if the operating system has a 1 millisecond interrupt latency. 8250 UARTs were used in the IBM PC 5150 and IBM PC/XT, while the 16450 UART were used in IBM PC/AT-series computers. The 8251 has USART capability.
COM port (DE-9 connector). COM (communication port) [1] [2] is the original, yet still common, name of the serial port interface on PC-compatible computers. It can refer not only to physical ports, but also to emulated ports, such as ports created by Bluetooth or USB adapters.
Serial cables are typically used for RS-232 communication. A serial cable or RS-232 cable is a cable used to transfer information between two devices using a serial communication protocol. The form of connectors depends on the particular serial port used. A cable wired for connecting two DTEs directly is known as a null modem cable.
Pinout [8] Pin Name Function 1 /SRQIN: Service request input to let peripherals request to be served by the host (C64). Used by the C128 for fast transfers. [9] 2: GND: Ground [8] 3 /ATN: Serial ATN In/out. Set low by the host (C64) to indicate the beginning of a serial data transfer. [9] 4 /CLK: Serial CLK In/out. Used for software handshaking ...