Computer Chapter – IPO Cycle Class 3rd

Computer Chapter – IPO Cycle 

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B. Fill in the blanks

1. Data is entered through input devices.

2. Results are displayed on output devices.

3. A computer works on IPO cycle.

4. Working of a computer on the given data is called processing.

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C. Write T for True and F for False

1. A computer has a huge storage capacity. — T

2. The mouse is an input device. — T

3. IPO stands for Input Pen Out. — F

4. A computer has zero IQ. — T

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D. Answer the following questions

1. Define the terms input and output. Give two examples of each.

Input:
The data and instructions that we enter into a computer are called input.

Examples: Keyboard, Mouse

Output:
The result that a computer gives after processing the data is called output.

Examples: Monitor, Printer

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2. Describe the IPO cycle with the help of examples.

IPO Cycle means Input – Process – Output.
A computer works in three steps:

• Input: We enter data using input devices like keyboard or mouse.

• Process: The computer processes the data inside the CPU.

• Output: The computer shows the result through output devices like monitor or printer.

Example:
If we type 2 + 3 on the keyboard (Input), the computer calculates it (Process) and shows 5 on the screen (Output).

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3. Explain any three characteristics of a computer.

1. Speed: A computer works very fast and can perform millions of calculations in seconds.

2. Accuracy: A computer gives correct results if the input is correct.

3. Storage: A computer can store a large amount of data.

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4. What are the limitations of a computer?

1. A computer has no intelligence (IQ) of its own.

2. It cannot think or make decisions by itself.

3. It works only according to the instructions given by the user.

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