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The minimum number of D flip-flops needed to construct a modulo-258 counter is :
(A) 8 ‏رم‎ 9
(C) 258 (D) 512

Which of the following is the corresponding min term when A=1, B=0, C=0 and D=1?
(A) A+B+C+D (@) A.B.C.D
(0) A+B+C+D @) A.B.C.D

A combinational circuit which has a single input, ‘n’ selection lines and a maximum of 2”
outputs is a/an :

(^) Encoder (B) Multiplexer
(C) Decoder ൯) Demultiplexer
A 16-bit address bus can handle a maximum of —————— different addresses.
(A) 25622 (B) 65536
(C) 32766 (D) 65652

A controller that takes control of the buses and transfers data directly between source and
destination bypassing the microprocessor is called :

(^) DMA Controller (B) Master-Slave Controller
(C) Disk Controller (1) Read-Write Controller

The memory address of the next instruction executed by the microprocessor 8086, when
operated in real mode with value in CS = 1000 and value in IP = E000, is:

(A) 10700 ൫ ൮000
(0 1000 (D) 1000E

In 8086 assembly language, which of the following is not in the category of reserved words?

(A) directive (B) operator
(0) label (D) predefined symbol

Identify the addressing mode which is used in the following instruction :
MOV AX, [1562H]
(^) Register addressing mode (B) Register Indirect addressing mode

(C) Direct addressing mode (D) Immediate addressing mode

In 8255 PPI, which of the following modes takes only port C bits for set or reset?
(A) BSR Mode (B) Hand Shake I/O Mode
(0 Strobed I/O Mode (D) Bi-directional Data Bus Mode

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