Question 71 : How many interrupts are there in micro controller?
1. 3
2. 6
3. 4
4. 5
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Question 72 : What is the address range of SFRs?
1. 80h to feh
2. 00h to ffh
3. 80h to ffh
4. 70h to 80h
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Question 73 : External Access is used to permit ____________
1. Peripherals
2. Power supply
3. ALE
4. Memory interfacing
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Question 74 : Which pin provides a reset option in 8051?
1. Pin 1
2. Pin 8
3. Pin 11
4. Pin 9
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Question 75 : The use of Address Latch Enable is to multiplex address and data memory.
1. True
2. False
3.
4.
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Question 76 : What is order of the assembly and running 8051 program?
i) Myfile.asm
ii) Myfile.lst
iii) Myfile.obj
iv) Myfile.hex
1. i,ii,iii,iv
2. ii,iii,I,iv
3. iv,ii,I,iii
4. iii,ii,I,iv
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Question 77 : Auxiliary carry is set during which condition?
1. When carry is generated from D3 to D4
2. When carry is generated from D7
3. When carry is generated from both D3 to D4 and D7
4. When carry is generated at either D3 to D4 or D7
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Question 78 : Program counter stores what?
1. Address of before instruction
2. Address of the next instruction
3. Data of the before execution to be executed
4. Data of the execution instruction
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Question 79 : SCON in serial port is used for which operation?
1. Transferring data
2. Receiving data
3. Controlling
4. Controlling and transferring
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Question 80 : Is ROM is used for storing data storage?
1. True
2. False
3.
4.
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