McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering , Electronics and Communication Engineering .
| 51. |
The purpose of the microprocessor is to control |
| A. | memory |
| B. | switches |
| C. | processing |
| D. | tasks |
| Answer» A. memory | |
| 52. |
The first digital electronic computer was built in the year |
| A. | 1950 |
| B. | 1960 |
| C. | 1940 |
| D. | 1930 |
| Answer» C. 1940 | |
| 53. |
In 1960's texas institute invented |
| A. | integrated circuits |
| B. | microprocessor |
| C. | vacuum tubes |
| D. | transistors |
| Answer» A. integrated circuits | |
| 54. |
The intel 8086 microprocessor is a processor |
| A. | 8 bit |
| B. | 16 bit |
| C. | 32 bit |
| D. | 4 bit |
| Answer» B. 16 bit | |
| 55. |
The microprocessor can read/write 16 bit data from or to |
| A. | memory |
| B. | I /O device |
| C. | processor |
| D. | register |
| Answer» A. memory | |
| 56. |
In 8086 microprocessor , the address bus is bit wide |
| A. | 12 bit |
| B. | 10 bit |
| C. | 16 bit |
| D. | 20 bit |
| Answer» D. 20 bit | |
| 57. |
The work of EU is |
| A. | encoding |
| B. | decoding |
| C. | processing |
| D. | calculations |
| Answer» B. decoding | |
| 58. |
The 16 bit flag of 8086 microprocessor is responsible to indicate |
| A. | the condition of result of ALU operation |
| B. | the condition of memory |
| C. | the result of addition |
| D. | the result of subtraction |
| Answer» A. the condition of result of ALU operation | |
| 59. |
The CF is known as |
| A. | carry flag |
| B. | condition flag |
| C. | common flag |
| D. | single flag |
| Answer» A. carry flag | |
| 60. |
The SF is called as |
| A. | service flag |
| B. | sign flag |
| C. | single flag |
| D. | condition flag |
| Answer» B. sign flag | |
| 61. |
The OF is called as |
| A. | overflow flag |
| B. | overdue flag |
| C. | one flag |
| D. | over flag |
| Answer» A. overflow flag | |
| 62. |
The IF is called as |
| A. | initial flag |
| B. | indicate flag |
| C. | interrupt flag |
| D. | inter flag |
| Answer» C. interrupt flag | |
| 63. |
The register AX is formed by grouping |
| A. | AH & AL |
| B. | BH & BL |
| C. | CH & CL |
| D. | DH & DL |
| Answer» A. AH & AL | |
| 64. |
The SP is indicated by |
| A. | single pointer |
| B. | stack pointer |
| C. | source pointer |
| D. | destination pointer |
| Answer» B. stack pointer | |
| 65. |
The BP is indicated by |
| A. | base pointer |
| B. | binary pointer |
| C. | bit pointer |
| D. | digital pointer |
| Answer» A. base pointer | |
| 66. |
The SS is called as |
| A. | single stack |
| B. | stack segment |
| C. | sequence stack . |
| D. | random stack |
| Answer» B. stack segment | |
| 67. |
The index register are used to hold |
| A. | memory register |
| B. | offset address |
| C. | segment memory |
| D. | offset memory |
| Answer» A. memory register | |
| 68. |
The BIU contains FIFO register of size bytes |
| A. | 8 |
| B. | 6 |
| C. | 4 |
| D. | 12 |
| Answer» B. 6 | |
| 69. |
The BIU prefetches the instruction from memory and store them in |
| A. | queue |
| B. | register |
| C. | memory |
| D. | stack |
| Answer» A. queue | |
| 70. |
The 1 MB byte of memory can be divided into segment |
| A. | 1 Kbyte |
| B. | 64 Kbyte |
| C. | 33 Kbyte |
| D. | 34 Kbyte |
| Answer» B. 64 Kbyte | |
| 71. |
The DS is called as |
| A. | data segment |
| B. | digital segment |
| C. | divide segment |
| D. | decode segment |
| Answer» A. data segment | |
| 72. |
The CS register stores instruction in code segment |
| A. | stream |
| B. | path |
| C. | codes |
| D. | stream line |
| Answer» C. codes | |
| 73. |
The IP is bits in length |
| A. | 8 bits |
| B. | 4 bits |
| C. | 16 bits |
| D. | 32 bits |
| Answer» C. 16 bits | |
| 74. |
The push source copies a word from source to |
| A. | stack |
| B. | memory |
| C. | register |
| D. | destination |
| Answer» A. stack | |
| 75. |
LDs copies to consecutive words from memory to register and |
| A. | ES |
| B. | DS |
| C. | SS |
| D. | CS |
| Answer» B. DS | |
| 76. |
IMUL source is a signed |
| A. | multiplication |
| B. | addition |
| C. | subtraction |
| D. | division |
| Answer» A. multiplication | |
| 77. |
destination inverts each bit of destination |
| A. | NOT |
| B. | NOR |
| C. | AND |
| D. | OR |
| Answer» A. NOT | |
| 78. |
The JS is called as |
| A. | jump the signed bit |
| B. | jump single bit |
| C. | jump simple bit |
| D. | jump signal it |
| Answer» A. jump the signed bit | |
| 79. |
Instruction providing both segment base and offset address are called |
| A. | below type . |
| B. | far type |
| C. | low type |
| D. | high type |
| Answer» B. far type | |
| 80. |
The conditional branch instruction specify for branching |
| A. | conditions |
| B. | instruction |
| C. | address |
| D. | memory |
| Answer» A. conditions | |
| 81. |
The microprocessor determines whether the specified condition exists or not by testing the |
| A. | carry flag |
| B. | conditional flag |
| C. | common flag |
| D. | sign flag |
| Answer» B. conditional flag | |
| 82. |
The LES copies to words from memory to register and |
| A. | DS |
| B. | CS |
| C. | ES |
| D. | DS |
| Answer» C. ES | |
| 83. |
The translates a byte from one code to another code |
| A. | XLAT |
| B. | XCHNG |
| C. | POP |
| D. | PUSH |
| Answer» A. XLAT | |
| 84. |
The contains an offset instead of actual address |
| A. | SP |
| B. | IP |
| C. | ES |
| D. | SS |
| Answer» B. IP | |
| 85. |
The 8086 fetches instruction one after another from of memory |
| A. | code segment |
| B. | IP |
| C. | ES |
| D. | SS |
| Answer» A. code segment | |
| 86. |
The BIU contains FIFO register of size 6 bytes called . |
| A. | queue |
| B. | stack |
| C. | segment |
| D. | register |
| Answer» A. queue | |
| 87. |
The is required to synchronize the internal operands in the processor CLK Signal |
| A. | UR Signal |
| B. | Vcc |
| C. | AIE |
| D. | Ground |
| Answer» A. UR Signal | |
| 88. |
The pin of minimum mode AD0-AD15 has address |
| A. | 16 bit |
| B. | 20 bit |
| C. | 32 bit |
| D. | 4 bit |
| Answer» B. 20 bit | |
| 89. |
The pin of minimum mode AD0- AD15 has _ data bus |
| A. | 4 bit |
| B. | 20 bit |
| C. | 16 bit |
| D. | 32 bit |
| Answer» C. 16 bit | |
| 90. |
is used to write into memory |
| A. | RD |
| B. | WR |
| C. | RD / WR |
| D. | CLK |
| Answer» B. WR | |
| 91. |
The functions of Pins from 24 to 31 depend on the mode in which is operating |
| A. | 8085 |
| B. | 8086 |
| C. | 80835 |
| D. | 80845 |
| Answer» B. 8086 | |
| 92. |
The RD, WR, M/IO is the heart of control for a mode |
| A. | minimum |
| B. | maximum |
| C. | compatibility mode |
| D. | control mode |
| Answer» A. minimum | |
| 93. |
In a minimum mode there is a on the system bus |
| A. | single |
| B. | double |
| C. | multiple |
| D. | triple |
| Answer» A. single | |
| 94. |
If MN/MX is low the 8086 operates in mode |
| A. | Minimum |
| B. | Maximum |
| C. | both (A) and (B) |
| D. | medium |
| Answer» B. Maximum | |
| 95. |
In max mode, control bus signal So,S1 and S2 are sent out in form |
| A. | decoded |
| B. | encoded |
| C. | shared |
| D. | unshared |
| Answer» B. encoded | |
| 96. |
The bus controller device decodes the signals to produce the control bus signal |
| A. | internal |
| B. | data |
| C. | external |
| D. | address |
| Answer» C. external | |
| 97. |
A Instruction at the end of interrupt service program takes the execution back to the interrupted program |
| A. | forward |
| B. | return |
| C. | data |
| D. | line |
| Answer» B. return | |
| 98. |
The main concerns of the are to define a flexible set of commands |
| A. | memory interface |
| B. | peripheral interface |
| C. | both (A) and (B) |
| D. | control interface |
| Answer» A. memory interface | |
| 99. |
Primary function of memory interfacing is that the should be able to read from and write into register |
| A. | multiprocessor |
| B. | microprocessor |
| C. | dual Processor |
| D. | coprocessor |
| Answer» B. microprocessor | |
| 100. |
To perform any operations, the Mp should identify the |
| A. | register |
| B. | memory |
| C. | interface |
| D. | system |
| Answer» A. register | |
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