Microprocessor The data bus of any microprocessor is always Either unidirectional or bi-directional Bi-directional None Unidirectional Either unidirectional or bi-directional Bi-directional None Unidirectional 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 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) irrelevant ANSWER DOWNLOAD EXAMIANS APP
Microprocessor SPHL instruction copies the content of H-L register pair to the _________. Stack Pointer B-C PSW D-E Stack Pointer B-C PSW D-E 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 A microprocessor is ALU and memory on a single chip. and control unit on a single chip. register unit and control unit on a single chip. register unit and I/O device on a single chip. and memory on a single chip. and control unit on a single chip. register unit and control unit on a single chip. register unit and I/O device on a single chip. ANSWER DOWNLOAD EXAMIANS APP
Microprocessor Assertion(A): Ready signal of microprocessor is used to detect whether a peripheral is ready for the data transfer or not. Reason(R): In the microprocessor during data transfer operations, the wait states are added by forcing the ready signal low. Both A & R are true and R is the correct explanation of A. A is true but R is false. A is false but R is true. Both A & R are true but R is not the correct explanation of A . Both A & R are true and R is the correct explanation of A. A is true but R is false. A is false but R is true. Both A & R are true but R is not the correct explanation of A . ANSWER DOWNLOAD EXAMIANS APP
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