.
Decodes the instruction and carries out the arithmetic and logical operations.
Decodes the instruction and generates the corresponding control signals.
Decodes and stores the instruction currently being decoded.
None of the above
A 3-address instruction format
A 2-address instruction format
A 1-address instruction format
A 0-address instruction format
Adds 30FF to the value in Accumulator and stores the sum in the memory location 30FF
Adds 30FF to the value in Accumulator and stores the sum in Accumulator
Adds the value in memory location 30FF to the value in Accumulator and stores the sum in Accumulator
None of the above
1->A; 2->D; 3->C; 4->B;
1->D; 2->A; 3->B; 4->C;
1->D; 2->A; 3->C; 4->B;
1->A; 2->D; 3->B; 4->C;
Arithmetic and Logical instruction
Control instruction
Data transfer instruction
None of the above
A special purpose register used to provide the memory address
A special purpose register used to store the instructions
A special purpose register used for data transfer
A special purpose register used to store the address of the next instruction
Arithmetic processing unit
General purpose registers
Main memory
Control unit
Instruction fetch
Decode
Execute
Interrupt
Immediate addressing mode
Direct addressing mode
Indirect addressing mode
None of these
Memory data register
Instruction register
Program counter
Memory address register
Data bus
Address bus
Control bus
either data bus or address bus
0, 0, 1, 0, 1, 0
0, 1, 0, 0, 1, 0
0, 0, 0, 0, 1, 0
0, 0, 1, 0, 0, 0
OR gates only
NAND gates only
EX-OR gates only
NOR gates only
1, 1, 0
1, 0, 0
0, 1, 0
1, 0, 1
True
False
Transmit 8-byte unit of data
Transmit 8-bit unit of data
Transmit 256 bit unit of data
None of the above
Synchronise the modules
Store the status of the processor
Select the functionality of the modules
Decode the instruction
t1 and t2
t2 and t3
t2 and t4
All of the above
1) PCout , MARin, Read, Select=0, Add, Zin 2) Zout , PCin , WMFC 3) MDRout, IRin 4) IRout, R1in
1)PCout , MARin, Read, Select=0, Add, Zin 2) Zout , PCin , WMFC 3) MDRout, IRin 4) IRout, MARin, Read 5) WMFC 6) MDRout, Yin, Select=1, Add 7) R1out, Zin 8) Zout, R1in
1) PCout , MARin, Read, Select=0, Add, Zin 2) Zout , PCin , Yin, WMFC 3) MDRout, IRin 4) Offset-field-of-IRout, Select=1, Add, Zin, If Zero Flag!=0 then END 5) Zout, PCin
None of the above
1) PCout , MARin, Read, Select=0, Add, Zin 2) Zout , PCin , WMFC 3) MDRout, IRin 4) IRout, R1in
1) PCout , MARin, Read, Select=0, Add, Zin 2) Zout , PCin , Yin, WMFC 3) MDRout, IRin 4) Offset-field-of-IRout, Select=1, Add, Zin, If Zero Flag!=0 then END 5) Zout, PCin
1)PCout , MARin, Read, Select=0, Add, Zin 2) Zout , PCin , WMFC 3) MDRout, IRin 4) IRout, MARin, Read 5) WMFC 6) MDRout, Yin, Select=1, Add 7) R1out, Zin 8) Zout, R1in
None of the above
1's complement method
2's complement method
 signed magnitude method
BCD subtraction method
Binary point number
Mantissa point number
Floating point number
None of these
CISC
RISC
ISA
ANNA
True
False
Special memory locations
Special purpose registers
Cache
Buffers
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