McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering , Electronics and Communication Engineering .
| 101. |
The Microprocessor places address on the address bus |
| A. | 4 bit |
| B. | 8 bit |
| C. | 16 bit |
| D. | 32 bit |
| Answer» C. 16 bit | |
| 102. |
The Microprocessor places 16 bit address on the add lines from that address by register should be selected |
| A. | address |
| B. | one |
| C. | two |
| D. | three |
| Answer» B. one | |
| 103. |
The of the memory chip will identify and select the register for the EPROM |
| A. | internal decoder |
| B. | external decoder |
| C. | address decoder |
| D. | data decoder |
| Answer» A. internal decoder | |
| 104. |
Microprocessor provides signal like to indicate the read operatio |
| A. | LOW |
| B. | MCMW |
| C. | MCMR |
| D. | MCMWR |
| Answer» C. MCMR | |
| 105. |
To interface memory with the microprocessor, connect register the lines of the address bus must be added to address lines of the chip. |
| A. | single |
| B. | memory |
| C. | multiple |
| D. | triple |
| Answer» B. memory | |
| 106. |
The remaining address line of bus is decoded to generate chip select signal |
| A. | data |
| B. | address |
| C. | control bus |
| D. | both (a) and (b) |
| Answer» B. address | |
| 107. |
signal is generated by combining RD and WR signals with IO/M |
| A. | control |
| B. | memory |
| C. | register |
| D. | system |
| Answer» A. control | |
| 108. |
Memory is an integral part of a system |
| A. | supercomputer |
| B. | microcomputer |
| C. | mini computer |
| D. | mainframe computer |
| Answer» B. microcomputer | |
| 109. |
has certain signal requirements write into and read from its registers |
| A. | memory |
| B. | register |
| C. | both (a) and (b) |
| D. | control |
| Answer» A. memory | |
| 110. |
An is used to fetch one address |
| A. | internal decoder |
| B. | external decoder |
| C. | encoder |
| D. | register |
| Answer» A. internal decoder | |
| 111. |
The primary function of the is to accept data from I/P devices |
| A. | multiprocessor |
| B. | microprocessor |
| C. | peripherals |
| D. | interfaces |
| Answer» B. microprocessor | |
| 112. |
signal prevent the microprocessor from reading the same data more than one |
| A. | pipelining |
| B. | handshaking |
| C. | controlling |
| D. | signaling |
| Answer» B. handshaking | |
| 113. |
Bits in IRR interrupt are |
| A. | reset |
| B. | set |
| C. | stop |
| D. | start |
| Answer» B. set | |
| 114. |
generate interrupt signal to microprocessor and receive acknowledge |
| A. | priority resolver |
| B. | control logic |
| C. | interrupt request register |
| D. | interrupt register |
| Answer» B. control logic | |
| 115. |
The pin is used to select direct command word |
| A. | A0 |
| B. | D7-D6 |
| C. | A12 |
| D. | AD7-AD6 |
| Answer» A. A0 | |
| 116. |
CS connect the output of |
| A. | encoder |
| B. | decoder |
| C. | slave program |
| D. | buffer |
| Answer» B. decoder | |
| 117. |
In which year, 8086 was introduced? |
| A. | 1978 |
| B. | 1979 |
| C. | 1977 |
| D. | 1981 |
| Answer» A. 1978 | |
| 118. |
Expansion for HMOS technology_ |
| A. | high level mode oxygen semiconductor |
| B. | high level metal oxygen semiconductor |
| C. | high performance medium oxide semiconductor |
| D. | high performance metal oxide semiconductor |
| Answer» D. high performance metal oxide semiconductor | |
| 119. |
8086 and 8088 contains transistors |
| A. | 29000 |
| B. | 24000 |
| C. | 34000 |
| D. | 54000 |
| Answer» A. 29000 | |
| 120. |
ALE stands for |
| A. | address latch enable |
| B. | address level enable |
| C. | address leak enable |
| D. | address leak extension |
| Answer» A. address latch enable | |
| 121. |
What is DEN? |
| A. | direct enable |
| B. | data entered |
| C. | data enable |
| D. | data encoding |
| Answer» C. data enable | |
| 122. |
In 8086, Example for Non maskable interrupts are . |
| A. | TRAP |
| B. | RST6.5 |
| C. | INTR |
| D. | RST6.6 |
| Answer» A. TRAP | |
| 123. |
In 8086 the overflow flag is set when . |
| A. | the sum is more than 16 bits. |
| B. | signed numbers go out of their range after an arithmetic operation. |
| C. | carry and sign flags are set. |
| D. | subtraction |
| Answer» B. signed numbers go out of their range after an arithmetic operation. | |
| 124. |
In 8086 microprocessor the following has the highest priority among all type interrupts? |
| A. | NMI |
| B. | DIV 0 |
| C. | TYPE 255 |
| D. | OVER FLOW |
| Answer» A. NMI | |
| 125. |
In 8086 microprocessor one of the following statements is not true? |
| A. | coprocessor is interfaced in max mode. |
| B. | coprocessor is interfaced in min mode. |
| C. | I /O can be interfaced in max / min mode. |
| D. | supports pipelining |
| Answer» B. coprocessor is interfaced in min mode. | |
| 126. |
Address line for TRAP is? |
| A. | 0023H |
| B. | 0024H |
| C. | 0033H |
| D. | 0099H |
| Answer» B. 0024H | |
| 127. |
Access time is faster for . |
| A. | ROM |
| B. | SRAM |
| C. | DRAM |
| D. | ERAM |
| Answer» B. SRAM | |
| 128. |
The First Microprocessor was . |
| A. | Intel 4004 |
| B. | 8080 |
| C. | 8085 |
| D. | 4008 |
| Answer» A. Intel 4004 | |
| 129. |
Status register is also called as . |
| A. | accumulator |
| B. | stack |
| C. | counter |
| D. | flags |
| Answer» D. flags | |
| 130. |
Which of the following is not a basic element within the microprocessor? |
| A. | Microcontroller |
| B. | Arithmetic logic unit (ALU) |
| C. | Register array |
| D. | Control unit |
| Answer» A. Microcontroller | |
| 131. |
Which method bypasses the CPU for certain types of data transfer? |
| A. | Software interrupts |
| B. | Interrupt-driven I/O |
| C. | Polled I/O |
| D. | Direct memory access (DMA) |
| Answer» D. Direct memory access (DMA) | |
| 132. |
Which bus is bidirectional? |
| A. | Address bus |
| B. | Control bus |
| C. | Data bus |
| D. | None of the above |
| Answer» C. Data bus | |
| 133. |
The first microprocessor had a(n) . |
| A. | 1 – bit data bus |
| B. | 2 – bit data bus |
| C. | 4 – bit data bus |
| D. | 8 – bit data bus |
| Answer» C. 4 – bit data bus | |
| 134. |
Which microprocessor has multiplexed data and address lines? |
| A. | 8086 |
| B. | 80286 |
| C. | 80386 |
| D. | Pentium |
| Answer» A. 8086 | |
| 135. |
Which is not an operand? |
| A. | Variable |
| B. | Register |
| C. | Memory location |
| D. | Assembler |
| Answer» D. Assembler | |
| 136. |
Which is not part of the execution unit (EU)? |
| A. | Arithmetic logic unit (ALU) |
| B. | Clock |
| C. | General registers |
| D. | Flags |
| Answer» B. Clock | |
| 137. |
A 20-bit address bus can locate . |
| A. | 1,048,576 locations |
| B. | 2,097,152 locations |
| C. | 4,194,304 locations |
| D. | 8,388,608 locations |
| Answer» A. 1,048,576 locations | |
| 138. |
Which of the following is not an arithmetic instruction? |
| A. | INC (increment) |
| B. | CMP (compare) |
| C. | DEC (decrement) |
| D. | ROL (rotate left) |
| Answer» D. ROL (rotate left) | |
| 139. |
During a read operation the CPU fetches _. |
| A. | a program instruction |
| B. | another address |
| C. | data itself |
| D. | all of the above |
| Answer» D. all of the above | |
| 140. |
Which of the following is not an 8086/8088 general-purpose register? |
| A. | Code segment (CS) |
| B. | Data segment (DS) |
| C. | Stack segment (SS) |
| D. | Address segment (AS) |
| Answer» D. Address segment (AS) | |
| 141. |
A 20-bit address bus allows access to a memory of capacity |
| A. | 1 MB |
| B. | 2 MB |
| C. | 4 MB |
| D. | 8 MB |
| Answer» A. 1 MB | |
| 142. |
Which microprocessor accepts the program written for 8086 without any changes? |
| A. | 8085 |
| B. | 8086 |
| C. | 8087 |
| D. | 8088 |
| Answer» D. 8088 | |
| 143. |
Which group of instructions do not affect the flags? |
| A. | Arithmetic operations |
| B. | Logic operations |
| C. | Data transfer operations |
| D. | Branch operations |
| Answer» C. Data transfer operations | |
| 144. |
The result of MOV AL, 65 is to store |
| A. | store 0100 0010 in AL |
| B. | store 42H in AL |
| C. | store 40H in AL |
| D. | store 0100 0001 in AL |
| Answer» D. store 0100 0001 in AL | |
Done Studing? Take A Test.
Great job completing your study session! Now it's time to put your knowledge to the test. Challenge yourself, see how much you've learned, and identify areas for improvement. Don’t worry, this is all part of the journey to mastery. Ready for the next step? Take a quiz to solidify what you've just studied.