WebThe operation, IOWR (active low) performs write operation on input data write operation on output data read operation on input data read operation on output data … WebThe operation, IOWR (active low) performs a) write operation on input data b) write operation on output data c) read operation on input data d) read operation on output …
Interfacing I/O Ports Questions and Answers - Sanfoundry
Web13 mrt. 2024 · c) WR(ACTIVE LOW) d) all of the mentioned . Answer: d . Explanation: RD(ACTIVE LOW), WR(ACTIVE LOW), A1, A0, RESET are the inputs . provided by the microprocessor to the read/write control logic of 8255. 6. The device that receives or transmits data upon the execution of input or output instructions by . the microprocessor … Web23. The operation, IOWR (active low) performs a) write operation on input data b) write operation on output data c) read operation on input data d) read operation on output data ANSWER: b) write operation on output data 24. To avoid loading during read operation, the device used is a) latch b) flip flop c) buffer d) tristate buffer fnaf fangame news
The input and output operations are respectively similar to the ...
Web15 okt. 2011 · 10-17-2011 10:21 AM. The IORD and IOWR macros treat the offset as a four byte word offset. Here are some examples: IOWR (0, 4, 1234). -> writes 1234 to base 0 + word offset 4 (byte address 0 + 4x4= 16) IORD (12, 2) -> reads from base 12 + word offset 2 (byte address 12+2x4 = 20) In general the byte offset is 'base + offset x 4'. WebWhen this signal is LOW, the CPU performs memory or I/O write operation. HLDA (Output): Pin no. 30, Hold Acknowledgment. It is sent by the processor when it receives HOLD signal. It is active HIGH signal. When HOLD is removed HLDA goes LOW. HOLD (Input): Pin no. 31, Hold. WebThe operation, IOWR (active low) performs a) write operation on input data b) write operation on output data c) read operation on input data d) read operation on output data Explanation: IOWR (active low) operation means writing data to an output device and not an input device. fnaf fangame scratch