Join Us ::

Menu Home Classes GK Engineering Past Papers Current Affairs Technical GAT Subject Programming Medical Papers

Engineering :: All Aptitude Test ::

Home » Engineering » Aptitude Test - 49
Hassan
1.How many letters of symbol is assigned to instruction to facilitate writing symbolic program?
A. 2
B. 3
C. 4
D. 2
2.In memory reference instructions, the address part has numbers of bits equal to?
A. 10
B. 11
C. 12
D. 10
3.In an indirect address instruction, the first hexadecimal digit ranges in value from?
A. 0-E
B. 0-6
C. 8-F
D. 0-E
4.In direct mode, the first hexadecimal digit ranges in value from?
A. 0-E
B. 0-6
C. 8-F
D. 0-E
5.The computer can execute the program only when they are represented in?
A. Binary
B. Assembly
C. High-level
D. Binary
6.Who translates symbolic instruction into one binary coded instruction?
A. Compiler
B. Interpreter
C. Assembler
D. Compiler
7.The program that translates a high-level language program to binary is called as?
A. Translator
B. Interpreter
C. Assembler
D. Translator
8.Which of the following instruction cannot be in octal program?
A. 2008
B. 1010
C. 0652
D. 2008
9.With help of which we can shift memory location of next instruction?
A. END
B. SFT
C. ORG
D. END
10.If some address contains DEC -23, then the hexadecimal number it stores?
A. 0023
B. FFE9
C. 0017
D. 0023
11.Which field of assembly language program cannot be empty?
A. Instruction
B. Label
C. Comment
D. Instruction
12.As per rule of language, which of the given symbolic address is invalid?
A. A
B. XY1
C. PQ (D) ABCD
D. A
13.As per rule of language, which of the given symbolic address is invalid?
A. AB
B. PQR
C. MN2
D. AB
14.A symbolic address in the label field should be terminated by which special character?
A. Full-stop
B. Comma
C. Semicolon
D. Full-stop
15.Which of the following is not pseudo-instruction?
A. HLT
B. ORG
C. END
D. HLT
16.In the basic computer, each character is represented by an 8-bit code. The high-order bit is always?
A. 0
B. 1
C. x
D. 0
17.A low memory can be connected to microprocessor by using
A. INTER
B. RESET IN
C. READY
D. INTER
18. To put the microprocessor in the wait state
A. lower the HOLD input
B. lower the READY input
C. raise the HOLD input
D. lower the HOLD input
19.A basic instruction that can be interpreted by a computer generally has
A. An operand and an address
B. A decoder and an accumulator
C. Sequence register and decoder
D. An operand and an address
20.In a microprocessor system with memory mapped I/O
A. Devices have 8-bit addresses
B. Devices are accessed using IN and OUT instructions
C. There can be a maximum of 256 input devices and 256 output devices
D. Devices have 8-bit addresses
21.The addressing mode used in an instruction of the form ADD X, Y, is
A. absolute
B. immediate
C. indirect
D. absolute
22.The ability to temporarily halt the CPU and use this time to send information on buses is called
A. Direct memory access
B. Vectoring the interrupt
C. System Interrupt
D. Direct memory access
23. Number of machine cycles required for RET instruction in 8085 microprocessor is
A. 1
B. 2
C. 3
D. 1
24.In a microprocessor system, the RST instruction will cause an interrupt
A. only if an interrupt service routine is being executed
B. only if a bit in the interrupt mask is made 0
C. only if interrupts have been enabled by an EI instruction
D. only if an interrupt service routine is being executed
25.An instruction used to set the carry flag in a computer can be classified as
A. Data transfer
B. Process control
C. Logical
D. Data transfer
26. Microprocessor 8085 is the enhanced version of ......... with essentially the same construction set
A. 6800
B. 68000
C. 8080
D. 6800
27.In a generic microprocessor instruction cycle time is
A. Shorter than machine cycle time
B. Larger than machine cycle time
C. Ten times the machine cycle time
D. Shorter than machine cycle time
28. The stack pointer in the microprocessor is a
A. 16 bit register that point to stack memory locations
B. 32 bit accumulator
C. memory location in the stack
D. 16 bit register that point to stack memory locations
29.If we use 3 bits in the instruction word to indicate if an index register is to be used and if necessary, which one is to be used, then the number of index registers to be used in the machine will be
A. 3
B. 6
C. 5
D. 3
30.In a multiprocessor configuration,two co-processors are connected to the host 8086 processor. The two co-processor instruction sets
A. May be different
B. May overlap
C. Must be disjoint
D. May be different
Related Subjects

Date to Date Current Affairs 2022

PakMCQs.net

Quick Links

GAT Subject



   Computer Science    English Mcqs    Agriculture    

Engineering



   Computer Science    Civil Engineering    

Technical



   Networking    Electronics    Database    

Past Papers



   Model Papers    FPSC Papers    
Our Team | Career | Contact | JoinUs | Privacy Policy | DMC

© 2020-2024 by Pak-MCQs.net All Rights Reserved.

Email: [email protected]