Test: Communication System- 3 - Electrical Engineering (EE) MCQ
25 Questions MCQ Test - Test: Communication System- 3
An example or 8085- instruction that uses directaddressing is
For which one of the following, the instrumentXRA A in 8085 microprocessor can be used ?
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In 8085 microprocessor the value of the mostsignificant bit of the result following the executionof any arithmetic or Boolean instruction is storedin
In an 8085 microprocessor after the executionof XRAA instruction
Consider a memory chip with 1024 bytes storage connected to a 8085 chip address lines (or any microprocessor with 16 address lines) as below. What is the range of memory address?
If 8085 microprocessor adds 87 H and 79 H,the flags will be
READY signal in 8085 is useful when the CPUcommunicates with
A single instruction to clear the lower four bits ofthe accumulator in 8085 assembly language is
When a subroutine is called, the address of theinstruction following the CALL instruction isstored on the____
Consider the following instructions of 8085 flag μP:
1. MOV M.A
2. AODC
3. MVI A, FF
4. CMP M
Which of these cause change in the status of flag(s) ?
The first machine cycle of an instruction is always
Effective address is calculated by adding orsubtracting displancement value to
When TRAP interrupt is triggered in an Intel8085 A, the program control is transferred towhich one of the following?
The power failure alarm must be connected towhich one of the following inpts of 8085 ?
Which one of the following is not a vectoredinterrupt ?
Which one of the following interrupts is both leveland edge sensitive ?
Which one of the following is the softwareintercept of 8085 microprocessor ?
Which value a program counter will have when non – maskable interrupt of 8085 microprocessor is serviced ?
In 8085 microprocessor, the order of priorityfor hardware interrupts, are
In an Intel 8085 A, what is the content of theInstruction Register (IR) ?
Consider the following 8085 interrupts.
1. TRAP
2. INTR
3. RST 7.5
4. RST 0
5. RST 6
The software interrupts are
On receiving an interrupt from an I/O device,the CPU
The following sequence of instructions are execute by an 8085 microprocessor:
The contents of the stack pointer (SP) and the HL, register pair on completion of execution of these instructions are
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