Microprocessor Which of the following instruction will never affect the zero flag? XRA R DCR R ORA R DCX Rp XRA R DCR R ORA R DCX Rp ANSWER DOWNLOAD EXAMIANS APP
Microprocessor The content of the A15-A8 (higher order address lines) while executing “IN 8-bit port address” instruction are 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 all bits set (i.e. FFH) ANSWER DOWNLOAD EXAMIANS APP
Microprocessor Which one of the following ICs is used to interface keyboard and display? 8279 8253 8251 8259 8279 8253 8251 8259 ANSWER DOWNLOAD EXAMIANS APP
Microprocessor Which one of the following interrupt/interrupts is/are only level triggering? TRAP both ‘a’ and ‘b’ RST 5.5 RST 6.5 TRAP both ‘a’ and ‘b’ RST 5.5 RST 6.5 ANSWER DOWNLOAD EXAMIANS APP
Microprocessor Which one of the following instruction may be used to clear the accumulator content irrespective of its initial value? SUB A ORA A MOV A, 00H CLR A SUB A ORA A MOV A, 00H CLR A ANSWER DOWNLOAD EXAMIANS APP
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