Microprocessor Program counter in a digital computer Points the memory address of the next instruction to be fetched. Counts the number of times the loops are executed. Counts the numbers of programs run in the machine. Counts the number of times a subroutine is called. Points the memory address of the next instruction to be fetched. Counts the number of times the loops are executed. Counts the numbers of programs run in the machine. Counts the number of times a subroutine is called. ANSWER DOWNLOAD EXAMIANS APP
Microprocessor XCHG instruction exchanges the content of H-L with ______ register pair. D-E B-C Stack Pointer PSW D-E B-C Stack Pointer PSW ANSWER DOWNLOAD EXAMIANS APP
Microprocessor How can we make any bit of a register “0”? OR that bit with “1” and remaining bits with “0”. OR that bit with “0” and remaining bits with “1”. AND that bit with “1” and remaining bits with “0”. AND that bit with “0” and remaining bits with “1”. OR that bit with “1” and remaining bits with “0”. OR that bit with “0” and remaining bits with “1”. AND that bit with “1” and remaining bits with “0”. AND that bit with “0” and remaining bits with “1”. ANSWER DOWNLOAD EXAMIANS APP
Microprocessor The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are all bits set (i.e. FFH) irrelevant all bits reset (i.e. 00H) same as the content of A7-A0 all bits set (i.e. FFH) irrelevant all bits reset (i.e. 00H) same as the content of A7-A0 ANSWER DOWNLOAD EXAMIANS APP
Microprocessor During OPCODE fetch the state of S0 and S1 is 10 11 00 01 10 11 00 01 ANSWER DOWNLOAD EXAMIANS APP
Microprocessor Which of the following instruction will never affect the zero flag? DCX Rp ORA R XRA R DCR R DCX Rp ORA R XRA R DCR R ANSWER DOWNLOAD EXAMIANS APP
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