A hardwired control unit is implemented using logic circuits to generate control signals directly.
52. Control unit operation is performed:
Hardwired control only
Micro program control only
Hardwired or micro program control
None of the above
Show me the answer
Answer: 3. Hardwired or micro program control
Explanation:
The control unit can be implemented using either hardwired control or micro program control.
53. Micro instructions are stored in the:
Internal storage
Cache
External storage
Control memory
Show me the answer
Answer: 4. Control memory
Explanation:
Micro instructions are stored in control memory, which is part of the control unit.
54. The registers are essential to instruction execution:
Program counter
Memory buffer register
Instruction register
All of the above
Show me the answer
Answer: 4. All of the above
Explanation:
Registers such as the program counter, memory buffer register, and instruction register are essential for instruction execution.
55. In immediate addressing the operand is placed:
In the CPU register
After op-code in the instruction
In the memory
In the stack
Show me the answer
Answer: 2. After op-code in the instruction
Explanation:
In immediate addressing, the operand is part of the instruction itself and is placed immediately after the op-code.
56. The most common addressing technique employed by a CPU is:
Immediate
Indirect
Direct
All of the above
Show me the answer
Answer: 4. All of the above
Explanation:
CPUs use various addressing techniques, including immediate, indirect, and direct addressing, depending on the instruction.
57. CPU does not perform the operation:
Data transfer
Arithmetic operation
Logic operation
All of the above
Show me the answer
Answer: 4. All of the above
Explanation:
The CPU performs data transfer, arithmetic operations, and logic operations as part of its normal functioning.
58. Branch instructions are used to:
Manipulate numeric data
Transfer control
Logical data
Manage data
Show me the answer
Answer: 2. Transfer control
Explanation:
Branch instructions are used to transfer control to a different part of the program based on certain conditions.
59. Arithmetic instructions provide:
Data processing capabilities
Computational capabilities
Data storage capabilities
Control capabilities
Show me the answer
Answer: 2. Computational capabilities
Explanation:
Arithmetic instructions enable the CPU to perform mathematical computations such as addition, subtraction, multiplication, and division.
60. The ALU of a central processing unit does the essential math work for the computer. What does the control unit do?
Communicates its results
Activates the output device
Monitors the flow of information
Control the printer
Show me the answer
Answer: 3. Monitors the flow of information
Explanation:
The control unit manages and coordinates the flow of data and instructions within the CPU and between the CPU and other components.
61. Which type of computers use the 8-bit code called EBCDIC?
Minicomputers
Mainframe
Microcomputers
Supercomputers
Show me the answer
Answer: 2. Mainframe
Explanation:
EBCDIC (Extended Binary Coded Decimal Interchange Code) is primarily used in IBM mainframe computers.
62. The ALU of a computer responds to the commands coming from:
Primary memory
External memory
Control section
Cache memory
Show me the answer
Answer: 3. Control section
Explanation:
The ALU (Arithmetic Logic Unit) executes commands issued by the control unit, which is part of the control section.
63. The microprocessor of a computer cannot operate on any information if that information is not in its:
Secondary storage
ALU
Main storage
Logic unit
Show me the answer
Answer: 3. Main storage
Explanation:
The microprocessor can only operate on data that is loaded into the main memory (RAM).
64. Who coordinates the sequencing of events within the central processor or computer?
Logic unit
Register unit
Arithmetical unit
Control unit
Show me the answer
Answer: 4. Control unit
Explanation:
The control unit coordinates the sequencing of events and operations within the CPU.
65. A computer program that converts an entire program into machine language at one time is called a/an:
Interpreter
Compiler
Simulator
Commander
Show me the answer
Answer: 2. Compiler
Explanation:
A compiler translates the entire source code of a program into machine language in one go.
66. What is meant by a dedicated computer?
Which is used by one person only
Which is assigned one and only one task
Which does one kind of software
Which is meant for application software only
Show me the answer
Answer: 2. Which is assigned one and only one task
Explanation:
A dedicated computer is designed to perform a specific task or function.
67. A complete microcomputer system consists of:
Microprocessor
Peripheral equipment
Memory
All of the above
Show me the answer
Answer: 4. All of the above
Explanation:
A complete microcomputer system includes a microprocessor, memory, and peripheral equipment.
68. Which major development led to the production of microcomputers?
Magnetic tapes
Logic gates
Floppy disks
Integrated circuits
Show me the answer
Answer: 4. Integrated circuits
Explanation:
The development of integrated circuits (ICs) enabled the miniaturization of computer components, leading to the production of microcomputers.
69. The word size of a microprocessor refers to:
The amount of information that can be stored in a byte
The amount of information that can be stored in a cycle
The number of machine operations performed in a second
The maximum length of an English word that can be input to a computer
Show me the answer
Answer: 2. The amount of information that can be stored in a cycle
Explanation:
The word size of a microprocessor refers to the number of bits it can process in a single cycle.
70. One computer that is not considered a portable computer is:
Minicomputer
Notebook computer
Laptop computer
All of the above
Show me the answer
Answer: 1. Minicomputer
Explanation:
Minicomputers are not portable; they are larger and designed for multi-user environments.
71. Which of the following require large computer memory?
Imaging
Voice
Graphics
All of the above
Show me the answer
Answer: 4. All of the above
Explanation:
Imaging, voice, and graphics processing all require large amounts of memory to store and process high-resolution images, audio data, and complex graphical elements.
72. A computer enthusiast is:
User friendly
Computer
A hacker
All of the above
Show me the answer
Answer: 3. A hacker
Explanation:
A computer enthusiast is often referred to as a hacker, someone who is deeply interested in computers and programming.
73. Most of the inexpensive personal computers do not have any disk or diskette drive. What is the name of such computers?
Home computers
Dedicated computers
Diskless computers
None of the above
Show me the answer
Answer: 1. Home computers
Explanation:
Home computers, especially older or budget models, often lacked disk or diskette drives and relied on other storage methods like cassettes or cartridges.
74. A computer has no more sense than a light
Bulb
Switch
Pen
Pad
Show me the answer
Answer: 2. Switch
Explanation:
A computer, like a switch, operates based on inputs and outputs but does not have inherent "sense" or understanding.
75. How many address lines are needed to address each memory locations in a 2048x4 memory chip?
10
8
11
12
Show me the answer
Answer: 3. 11
Explanation:
A 2048x4 memory chip has 2048 memory locations. To address 2048 locations, you need 11 address lines because (2^{11} = 2048).
76. The stack pointer in the 8085 microprocessor is a
16-bit register that points to stack memory locations
16-bit accumulator
Memory locations in the stack
Flag register used for the stack
Show me the answer
Answer: 1. 16-bit register that points to stack memory locations
Explanation:
The stack pointer in the 8085 microprocessor is a 16-bit register that holds the address of the top of the stack in memory.
77. Which of the following registers is used to keep track of address of the memory location where the next instruction is located?
Memory address register
Instruction register
Memory data register
Program counter
Show me the answer
Answer: 4. Program counter
Explanation:
The program counter (PC) holds the address of the next instruction to be executed in memory.
78. Which of the following registers is loaded with the content of memory location pointed by the PC?
Memory address register
Instruction register
Memory data register
Program counter
Show me the answer
Answer: 2. Instruction register
Explanation:
The instruction register (IR) is loaded with the content of the memory location pointed to by the program counter (PC), which is the next instruction to be executed.
79. In which addressing mode, the effective address of the operand is generated by adding a constant value to the contents of a register?
Absolute mode
Immediate mode
Indirect mode
Index mode
Show me the answer
Answer: 4. Index mode
Explanation:
In index addressing mode, the effective address is calculated by adding a constant value (index) to the contents of a register.
Supercomputers are designed for high-performance tasks, particularly those involving complex mathematical calculations and simulations, such as weather forecasting, nuclear research, and scientific modeling.
82. The heart of any computer is the
CPU
I/O units
Memory
Disks
Show me the answer
Answer: 1. CPU
Explanation:
The CPU (Central Processing Unit) is often referred to as the "heart" of the computer because it performs the majority of processing tasks and controls other components.
83. The central processing unit (CPU) consists of:
Input, output and processing
Control unit, primary storage, and secondary storage
Control unit, arithmetical logic unit, and primary storage
None of the above
Show me the answer
Answer: 3. Control unit, arithmetical logic unit, and primary storage
Explanation:
The CPU consists of the control unit (CU), arithmetic logic unit (ALU), and primary storage (registers), which work together to execute instructions.
84. Which is not an input device?
CRT
Optical scanners
Voice recognition
COM (Computer Output Microfilm)
Show me the answer
Answer: 4. COM (Computer Output Microfilm)
Explanation:
COM (Computer Output Microfilm) is an output device used to store data on microfilm, not an input device.
85. The ascending order of a data hierarchy is:
Bit-bytes-field-record-file-database
Bytes-bit-fields-record-file-database
Bit-bytes-record-field-file-database
Bytes-bit-record-fields-file-database
Show me the answer
Answer: 1. Bit-bytes-field-record-file-database
Explanation:
The data hierarchy starts from the smallest unit (bit) and progresses to larger units like bytes, fields, records, files, and finally databases.
86. What is the control unit's function in the CPU?
To transfer data to primary storage
To store program instruction
To perform logic operations
To decode program instructions
Show me the answer
Answer: 4. To decode program instructions
Explanation:
The control unit (CU) decodes instructions fetched from memory and coordinates the execution of these instructions by sending signals to other parts of the CPU.
87. The most common input device used today is
Motherboard
Scanner
Track ball
Keyboard
Show me the answer
Answer: 4. Keyboard
Explanation:
The keyboard is the most widely used input device for entering text and commands into a computer.
88. Which is not a factor when categorizing a computer?
Speed of the output device
Amount of main memory the CPU can use
Cost of the system
Where is was purchased
Show me the answer
Answer: 4. Where is was purchased
Explanation:
The location of purchase is not a factor in categorizing a computer. Factors like speed, memory, and cost are more relevant.
89. Which is not true for primary storage?
Information must be transferred to primary storage
It is relatively more expensive
It allows very fast access to data
All of the above
Show me the answer
Answer: 4. All of the above
Explanation:
All the statements are true for primary storage (e.g., RAM), which is fast, expensive, and requires data to be transferred to it for processing.
90. Which is the most powerful type of computer?
Microcomputer
Mainframe computer
Minicomputer
Super computer
Show me the answer
Answer: 4. Super computer
Explanation:
Supercomputers are the most powerful computers, designed for high-performance tasks like scientific simulations and complex calculations.
91. Which kind of storage device can be carried around?
Floppy disk
System cabinet
Hard disk
Hard disk drive
Show me the answer
Answer: 1. Floppy disk
Explanation:
Floppy disks are portable storage devices that can be easily carried around, unlike system cabinets or hard disk drives.
92. Which kind of devices allows the user to add components and capabilities to a computer system?
System board
Input devices
Storage devices
Expansion slots
Show me the answer
Answer: 4. Expansion slots
Explanation:
Expansion slots on the motherboard allow users to add additional components like graphics cards, network cards, and other peripherals to enhance the system's capabilities.
93. Group of instructions that direct a computer is called
Storage
Logic
Memory
Program
Show me the answer
Answer: 4. Program
Explanation:
A program is a set of instructions that directs a computer to perform specific tasks.
94. The basic components of a modern digital computer are:
Input device
Central processing unit
Output device
All of the above
Show me the answer
Answer: 4. All of the above
Explanation:
A modern digital computer consists of input devices, a central processing unit (CPU), and output devices, among other components.
95. A collection of eight bits is called:
Byte
Record
Word
File
Show me the answer
Answer: 1. Byte
Explanation:
A byte is a unit of digital information that consists of 8 bits.
96. Processor of all computer, whether micro, mini or mainframe must have
ALU
Control unit
Primary storage
All of the above
Show me the answer
Answer: 4. All of the above
Explanation:
All processors, regardless of the type of computer, must have an Arithmetic Logic Unit (ALU), a control unit, and primary storage (registers) to function.
97. Where does a computer add and compare data?
Hard disk
CPU chip
Floppy disk
Memory chip
Show me the answer
Answer: 2. CPU chip
Explanation:
The CPU chip contains the Arithmetic Logic Unit (ALU), which is responsible for performing addition, comparison, and other arithmetic/logical operations.
98. If a particular idea can be implemented in hardware or software, the factor(s) that favor hardware implementation is/are
Cost-effectiveness
Reliability
Speed of operation
Frequent changes expected
Show me the answer
Answer: 3. Speed of operation
Explanation:
Hardware implementation is favored when speed of operation is critical, as hardware can perform tasks faster than software.
99. Tera is 2 to the power of
32
40
30
25
Show me the answer
Answer: 2. 40
Explanation:
Tera represents (2^{40}), which is approximately 1 trillion in decimal.
100. Von Neumann architecture is
SISD
MIMD
SIMD
MISD
Show me the answer
Answer: 1. SISD
Explanation:
Von Neumann architecture is based on the Single Instruction, Single Data (SISD) model, where one instruction is executed at a time on a single data stream.
