Recent questions tagged 8085

2 answers 70 views

The 8085 Microprocessor has A) 8-bits Data bus and 16-bits Address bus B) 8-bits Data bus and 8-bits Address bus C) 16-bits Data bus and 16-bits Address bus D) 32-bits Data bus and 8-bits Address bus 

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 86 views

The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 44 views

In 8085 microprocessor, how many T-states does OPCODE FETCH machine cycle normally require (i.e., when HOLD and WAIT signals are NOT forced)? A) 4 to 6 B) 3 to 8 C) 2 to 3 D) 8 to 12 

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 36 views

Then number of T-states of the instruction STA in 8085 microprocessor is A) 10 B) 12 C) 13 D) 16 

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 31 views

In 8085, whenever a signal is received at TRAP terminal, its program execution is transferred to a subroutine on address A) 0000 H B) 002C H C) 0024 H D) 0004 H

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 34 views

What is the size of memory which can be accessed by direct accessing in 8085 microprocessor? A) 64 kB B) 4 kB C) 128 kB D) 128 MB 

asked Jun 18, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 19 views

 What is the size of SP register in 8085 microprocessor? A) 16 bits B) 8 bits C) 64 bits D) 48 bits

asked Jun 18, 2018 in Electronics Engineering by Shimroz123
1 answer 13 views

The ALE line of an 8085 microprocessor is used to (A) latch the output of an I/O instruction into an external latch. (B) deactivate the chip-select signal from memory devices. (C) find the interrupt enable states of the TRAP interrupt. (D) latch the 8 bits of address lines AD7-AD0 into an external latch.

asked Apr 28, 2018 in Digital Electronics by Shimroz123
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