GATE 2019: Digital Electronics Quiz 3

Attempt now to get your rank among 830 students!

Question 1

The maximum capacity of the memory that can be interfaced with 8085 processor is ….

• A64MB
• B64KB
• C64GB
• DNone of these

Question 2

W and Z registers in the architecture of microprocessor 8085 are used for…….

• AAddition of two 16 bit numbers
• BFor interrupt handling
• CExchange of two 16 bit numbers
• DNone of these

Question 3

In an 8 bit microprocessor, which among the following is knows as high order register?

• AFlag register
• BAccumulator
• CProgram Counter
• DStack pointer

Question 4

In an 8 bit microcomputer, maximum memory can be connected is 32 K bytes, the length of stack pointer, program counter and number of data lines are respectively

• A16, 16, 8
• B15, 16, 7
• C15, 15, 8
• D16, 15, 8

Question 5

Which one of the following statements regarding the INT (interrupt) and the BRQ (bus request) pins in a CPU is true?

• AThe BRQ pin is sampled after every instruction cycle, but the INT is sampled after every machine cycle
• BBoth INT and BRQ are sampled after every machine cycle
• CThe INT pin is sampled after every instruction cycle, but the BRQ is sampled after every machine cycle
• DBoth INT and BRQ are sampled after every instruction cycle

Question 6

A snapshot of the address, data and control buses of an 8085 Microprocessor executing a program is given below.

The assembly language instruction being executed is

• AIN 24 H
• BIN 20 H
• COUT 24 H
• DOUT 20 H

• 830 attempts
• 2 upvotes
• 4 comments