1) What is a computer?
Computer is an electronic machine that accepts inputs, does processing and displays output.
2) Name any three places where computers are used?
Computer is an electronic machine that accepts inputs, does processing and displays output.
2) Name any three places where computers are used?
- Schools
- Businesses
- Government Offices.
3) Name four parts of a computer?
- Monitor
- CPU (Central Processing Unit)
- Keyboard
- Mouse
4) Name other parts that are connected to the computer.
- Printer
- Speaker and Headphones
- Microphone
- UPS (Uninterrupted Power Supply)
5) What is data?
The letters, numbers, or symbols that we enter into the computer are called data.
6) What is a device?
Any part that gives input to the computer, receives output or stores data is called a device.
7) Why is the computer called so powerful?
Input -> Processing -> Output (IPO)
Accepts data -> Input
Processes data-> Processing
Produce output -> Output
9) Name three types of computer devices?
The CPU is called processing device.
The letters, numbers, or symbols that we enter into the computer are called data.
6) What is a device?
Any part that gives input to the computer, receives output or stores data is called a device.
7) Why is the computer called so powerful?
- It can do thousands of actions per second(speed).
- Store huge amount of data (storage capability).
- It can do multiple jobs at the same time (versatility nature).
Input -> Processing -> Output (IPO)
Accepts data -> Input
Processes data-> Processing
Produce output -> Output
9) Name three types of computer devices?
- Input Devices: We use to enter the instructions and data into the computer. Example: keyboard, scanner.
- Output Devices: It shows the result after processing the data. Example: monitor, printer.
- Processing Devices: It is used to process the data. Example: CPU
The CPU is called processing device.
It is responsible for processing of data.
That is why, it is called brain of the computer.
The CPU has three parts: ALU, CU, MU.
Arithmetic and Logic Unit (ALU) – It can do arithmetic and logical calculation
Control Unit (CU) – It controls the workflow in the CPU
Memory Unit (MU) – It is a temporary storage area of the CPU
11) What is a memory?
The storage capacity of a computer is called memory.
Arithmetic and Logic Unit (ALU) – It can do arithmetic and logical calculation
Control Unit (CU) – It controls the workflow in the CPU
Memory Unit (MU) – It is a temporary storage area of the CPU
11) What is a memory?
The storage capacity of a computer is called memory.
There are two types of memory: primary memory and secondary memory.
12) Distinguish between primary memory and secondary memory.
Primary memory: It is also known as the main memory. It is the memory which stores data for quick access by the CPU. It is of two two types: RAM and ROM.
Secondary memory: It stores data and instructions permanently until someone erases it purposely. Hard disk, CD, DVD and Pen drive are commonly used secondary memory devices
13) What is the difference between RAM and ROM?
RAM (Random access memory): It is a short-term memory. It stores data and instructions temporarily. The CPU directly accesses data from RAM for processing. That is why, it is called the fastest memory.
12) Distinguish between primary memory and secondary memory.
Primary memory: It is also known as the main memory. It is the memory which stores data for quick access by the CPU. It is of two two types: RAM and ROM.
Secondary memory: It stores data and instructions permanently until someone erases it purposely. Hard disk, CD, DVD and Pen drive are commonly used secondary memory devices
13) What is the difference between RAM and ROM?
RAM (Random access memory): It is a short-term memory. It stores data and instructions temporarily. The CPU directly accesses data from RAM for processing. That is why, it is called the fastest memory.
ROM (Read only memory): It contains permanent instructions that a computer needs to operate (boot). It is written when the computer is being made and it cannot be changed.
14) Who is the father of computer?
Charles Babbage is considered as the father of the computer.
14) Who is the father of computer?
Charles Babbage is considered as the father of the computer.
