Microprocessors And Microcontrollers MCQ Questions & Answers | ECE

A. 8259

B. 8255

C. 8253

D. 8251

A. 8085

B. 8051

C. 8255

D. None of these

A. Interrupts

B. DMA

C. Virtual memory

D. Cache memory

A. Direct transfer of data between memory and accumulator

B. Direct transfer of data between memory and I/O devices without the use of µP

C. Transfer of data exclusively within µP registers

D. A fast transfer of data between µP registers

A. Instruction cycle time period is exactly equal to machine cycle time period

B. Instruction cycle time period is shorter than machine cycle time period

C. Machine cycle time period shorter than instruction cycle time period

D. Instruction cycle time period is exactly half of machine cycle time period

A. By resetting MSB of CR1 contents

B. By setting MSB of CR0 contents

C. By setting MSB of CR1 contents

D. By setting MSB of CR2 contents

A. Rotate accumulator right

B. Rotate accumulator right through carry

C. Rotate right carry

D. Rotate right carry through accumulator

A. Interrupt

B. Cycle stealing

C. Branch instruction

D. None of these

A. 1600

B. 3200

C. 65536

D. 67200

A. $$\overline {{\text{DEN}}} $$

B. ALE

C. INTR

D. $${\text{MN/}}\overline {{\text{MX}}} $$