PPSC Computer Science Chapter 17 Microprocessor And Assembly Language Online Test With Answers

PPSC Computer Science Chapter 17 Microprocessor And Assembly Language Online Test

Sr. # Questions Answers Choice
1 Which is the basic stack operation Push POP Both a and b None
2 Which point to the __________ of the stack TOP Start Mid None
3 The processor uses the stack to keep track of where the items are stored on it this by using the. Stack pointer register Queue pointer register Both a and b None
4 The sub program finish the return instruction recovers the return address from the. Queue Stack Program counter Pointer
5 The point where control returns after a subprogram is completed is known as the. Return address Main address Program address Current address
6 The area of memory with addresses near zero are called. High memory Mid memory Memory Low memory
7 Which is used to store critical pieces of data during subroutines and interrupts. Stack Queue Accumulator Data register
8 BCD stand for Binary coded decimal Binary coded decoded Both a and b None
9 The status register is also called the Condition code register Flag register a and b None
10 In which register instruction is decoded prepared and ultimately executed. Instruction register Current register Both a and b None
11 ______ stores the instruction currently being executed. Instruction register Current register Both a and b None
12 _________ causes the address of the next microprocessor to be obtained from the memory. CRJA ROM MAP HLT
13 _____ is the condiction CD IR Both a and b None
14 Which are the flags of status register. Over flow flag carry flag Half carry flag All of these
15 Causing a flag to became 0 is called. Clearing a flag Case a flag Both a and b None
16 LM stand for Least MAR Load MAR Least MRA Load MRA
17 ED stand for Enable MRD Enable MDR Both a and b None
18 LA stand for Load accumulator Least accumulator Last accumulator None
19 Single address computer instruction has two parts. The operation code The operand A and b None
20 How many parts of single address computer instruction. 1 2 3 4
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