Explore topic-wise MCQs in Microprocessors.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Microprocessors knowledge and support exam preparation. Choose a topic below to get started.

1.

IN_74LS245,_IF_DIR_IS_1,_THEN_THE_DIRECTION_IS_FROM?$

A. inputs to outputs
B. outputs to inputs
C. source to sink
D. sink to source
Answer» B. outputs to inputs
Discussion
2.

In_memory-mapped_scheme,_the_devices_are_viewed_as$

A. distinct I/O devices
B. memory locations
C. only input devices
D. only output devices
Answer» C. only input devices
Discussion
3.

The chip 74LS245 i?

A. bidirectional buffer
B. 8-bit input port
C. one that has 8 buffers
D. all of the mentioned
Answer» E.
Discussion
4.

To avoid loading during read operation, the device used is

A. latch
B. flipflop
C. buffer
D. tristate buffer
Answer» E.
Discussion
5.

While performing read operation, one must take care that much current should not be

A. sourced from data lines
B. sinked from data lines
C. sourced or sinked from data lines
D. sinked from address lines
Answer» D. sinked from address lines
Discussion
6.

The latch or IC 74LS373 acts as

A. good input port
B. bad input port
C. good output port
D. bad output port
Answer» D. bad output port
Discussion
7.

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» C. read operation on input data
Discussion
8.

The input and output operations are respectively similar to the operations,

A. read, read
B. write, write
C. read, write
D. write, read
Answer» D. write, read
Discussion
9.

The example of output device is

A. CRT display
B. 7-segment display
C. Printer
D. All of the mentioned
Answer» E.
Discussion
10.

The device that enables the microprocessor to read data from the external devices is

A. printer
B. joystick
C. display
D. reader
Answer» C. display
Discussion