Computer Science · Class 1
Introduction to Computers
Learn Introduction to Computers with notes, examples, and practice questions.
3 sections15–25 min read6 MCQs · 2 examples
Chapter Overview
A computer needs both hardware and software to work.
Computers are electronic machines that accept data, process it using instructions, and produce useful output. Learn the IPO cycle and everyday uses.
What is a Computer?
- Electronic device that processes data at high speed
- Follows program instructions
- Stores data and results
IPO Cycle
- Input: keyboard, mouse, scanner
- Process: CPU executes instructions
- Output: monitor, printer, speakers
- Storage: hard disk, SSD, pen drive
Solved Examples
Step-by-step solutions — read each step before checking the final answer.
Identify IPO
Student types marks in spreadsheet and sees total. Identify IPO.
- 1Input: marks on keyboard
- 2Process: addition by software
- 3Output: total on screen
Answer
Input, Process, Output identified
Computer vs calculator
How is a computer different from a calculator?
- 1Calculator: fixed arithmetic
- 2Computer: runs many programs
- 3Computer stores large data
Answer
Computer is programmable and multipurpose
Key Points to Remember
- ✓ Computers are fast, accurate, diligent
- ✓ Need electricity to operate
- ✓ Data becomes information after processing
Exam Tips
- • Draw IPO diagram
- • Give input/output examples
- • Distinguish data from information
Practice MCQs — Introduction to Computers
Test your understanding with topic-wise multiple choice questions. Explanations appear after each answer.
Question 1 of 6Score: 0/0
Which is NOT a computer characteristic?