Computer Architecture
69 Questions
Computer Architecture MCQs — Practice & Prepare
✅ Correct answer: CPU
Time-sharing techniques are designed to make the best use of the CPU by allowing it to rapidly switch between multiple users or tasks, giving the appearance of simultaneous processing and maximizing processor efficiency.
✅ Correct answer: ALU and CU
The CPU is fundamentally made up of two smaller components: the Arithmetic Logic Unit (ALU), which performs calculations and comparisons, and the Control Unit (CU), which directs and coordinates operations.
✅ Correct answer: To compare numbers
The logical unit (part of the ALU) is responsible for comparing numbers and data — such as checking whether one value is greater than, less than, or equal to another — enabling decision-making within a program.
✅ Correct answer: ALU
The ALU (Arithmetic Logic Unit) is the part of the computer specifically responsible for calculating (arithmetic operations) and comparing (logical operations) data.
✅ Correct answer: Input unit
The ALU (Arithmetic Logic Unit) handles logical operations and comparisons, such as determining whether one value is less than, equal to, or greater than another.
✅ Correct answer: Arithmetic Logic Unit
ALU stands for Arithmetic Logic Unit, the component of the CPU responsible for performing all arithmetic calculations (like addition and subtraction) and logical operations (like comparisons).
✅ Correct answer: 4
The ALU of a computer performs four basic types of arithmetic operations: addition, subtraction, multiplication, and division, forming the foundation of all numeric computation.
✅ Correct answer: Arithmetic logic unit
Every processor contains both a control unit, which manages and directs operations, and an arithmetic logic unit, which performs the actual calculations and logical comparisons.
✅ Correct answer: ALU
The ALU (Arithmetic Logic Unit) is the combinational digital electronic circuit that performs arithmetic operations (like addition) and bitwise/logical operations on binary numbers within the CPU.
30
The portion of the CPU that coordinates the activities of all the other computer components is the
✅ Correct answer: control unit
The control unit is the portion of the CPU responsible for coordinating and directing the activities of all other computer components, ensuring instructions are executed in the correct sequence.
✅ Correct answer: Control unit
The control unit is the important circuitry within a computer system that directs the operation of the processor, managing the timing and sequencing of all its internal operations.
✅ Correct answer: Control unit
The control unit is the part of a computer that coordinates all of its functions, acting as the 'traffic director' that manages how data flows between the CPU, memory, and input/output devices.
✅ Correct answer: control signal
The control unit manages other components by generating control signals — electronic signals that instruct different parts of the computer on what actions to perform and when.
✅ Correct answer: nerve centre
The control unit of a digital computer is often called the 'nerve centre,' since it coordinates and directs the activity of every other part of the CPU and computer system, much like a nervous system controls a body.
✅ Correct answer: buffer
A buffer is a temporary storage area attached to the CPU used to hold data during input/output operations, helping manage differences in processing speed between devices.
✅ Correct answer: clock speed
Clock speed, typically measured in gigahertz (GHz), is used to measure how fast a processor operates, indicating how many processing cycles it can perform per second.
✅ Correct answer: time slice
A time slice is a uniform interval of CPU time allocated to a task, a key concept in time-sharing systems where the processor rapidly switches between multiple tasks or users.
✅ Correct answer: Microprocessor
When the entire CPU is fabricated as a single integrated circuit on a silicon chip, it is called a microprocessor — the compact, powerful chip found at the heart of modern computers.
✅ Correct answer: Ted Hoff
Ted Hoff, working at Intel, is credited with inventing the first microprocessor, the Intel 4004, released in 1971, which laid the foundation for all modern single-chip processors.
✅ Correct answer: microchip
A microprocessor is called the 'brain' of the computer and is also known as a microchip, since it packs the entire processing logic of a CPU onto a single, small silicon chip.