15 Questions
What type of memory is volatile and can be upgraded by inserting small cards into slots inside the system unit?
RAM
Which type of memory keeps software for reading only and cannot be written on by the computer?
Read Only Memory (ROM)
Which type of memory is linked to the CPU, contains very fast chips, and reduces the speed gap between the RAM and the CPU?
Cache Memory
What is the function of Video Memory or video card in a computer system?
Shares data of pictures displayed on the screen
How many bits make up a byte in computer memory?
8 bits
What is the purpose of a parallel port in a computer system?
To connect printers
What is the function of a hard disk in a computer system?
To store the operating system and application programs
What is the primary purpose of a serial port in a computer system?
To connect items such as a modem
What is the main function of a network port in a computer system?
To serve as an interface between the computer and network
What is the role of a firewire in a computer system?
To connect digital cameras and scanners
What does the term 'megahertz (MHZ)' measure in a CPU?
The speed of the central processing unit (CPU).
What is the function of the control unit in a CPU?
It is responsible for controlling the sequencing and timing of the other elements making up the CPU.
What are the physical components of a computer known as?
Hardware
What is the main function of the arithmetic logic unit (ALU) in a CPU?
Performing arithmetic operations and logical operations.
Where are the program instructions and data used by the arithmetic logic unit (ALU) stored in a CPU?
Registers
Study Notes
Memory Types
- RAM (Random Access Memory) is volatile and can be upgraded by inserting small cards into slots inside the system unit.
- ROM (Read-Only Memory) keeps software for reading only and cannot be written on by the computer.
Cache Memory
- Cache Memory is linked to the CPU, contains very fast chips, and reduces the speed gap between the RAM and the CPU.
Computer Components
- Video Memory or video card is responsible for storing graphics and video data.
- A hard disk is used for storing data, programs, and operating systems.
- A parallel port is used for connecting devices such as printers.
- A serial port is used for connecting devices such as modems and mice.
- A network port is used for connecting computers to a network.
- A firewire (also known as IEEE 1394) is used for high-speed data transfer.
CPU Functions
- The term 'megahertz (MHz)' measures the clock speed of a CPU.
- The control unit in a CPU retrieves and decodes instructions, generates control signals, and manages data transfer.
- The arithmetic logic unit (ALU) performs arithmetic and logical operations.
- The program instructions and data used by the ALU are stored in the CPU's registers.
Computer Hardware
- The physical components of a computer are known as hardware.
Test your knowledge about computer memory with this quiz. Learn about RAM, the main memory where data and programs are temporarily stored, and ROM, which retains data even when the computer is turned off.
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