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 The _______ place the data from a register onto the data bus. CPU ALU Both a and b None
2 the CPU Sends out a _______ signal to indicate that valid data is available on the data bus. READ WRITE Both a and b None
3 DMA Stand for Direct memory access Direct memory allocation Data memory access Data memory allocation
4 The lower red curvy arrow show that CPU places the address extracted from the memory location on the. Address bus System bus Control bus Data bus
5 The information on the data bus in transferred to the ______ register. MOC MDR VAM CPU
6 The information is transferred from the ________ and_______ specified register. MDR CPU Both a and b None
7 The upper red arrow show that CPU sends out the control signals _____ and ____ indicate the data is read from the memory. Memory request Read Both a and b None
8 Which are the READ operation can in simple steps. Address Data Control All these
9 MOC stand for Memory operation complex Micro operation complex Memory operation complete None
10 How many bit or MAR register 8 bit 16 bit 32 bit 64 bit
11 Which register is connected to the memory by way of the address bus. MAR MDR SAM None
12 Which bus plays a crucial role in I/O System bus Control bus address bus Both a and b
13 Which microprocessor to read an item from memory. VAM SAM MOC None
14 VAM sand for Valid memory address Virtual memory address variable memory address None
15 MAR stand for Memory address register Memory data recode Micro data register None
16 SAM stand for Simple architecture machine Solved architecture machine Both a and b None
17 Which register is used to communicate with memory. MAR MDR Both a and b None
18 A microprocessor retries instructions from Control memory Cache memory Main memory Virtual memory
19 The problems of bus confit and spares address distribution are eliminated by the use of ___ address technique. Fully decoding Half decoding Both a and b None
20 in linear decoding address bus of 16 -bit wide can connect only of RAM Address map is not contiguous Confects occur if two of the select lines become active at the same time If all unused address lines are not used as chip selectors then these unused lines become don't cares. None
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