ITI COPA (Computer Operator & Programming Assistant) – Basic Notes

Topic -Introduction to computer system

A computer system is an electronic machine that accepts data as input, processes it according to instructions, and produces output.

Basic Functions of a Computer

Input – Takes data from the user
Processing – Works on data using CPU
Output – Gives result to the user
Storage – Saves data for future use

Block Diagram of Computer

Input Unit
Central Processing Unit (CPU)
Output Unit
Memory Unit

2. Concepts of Hardware and Software

Hardware

Hardware refers to the physical parts of a computer that can be seen and touched.

Examples:

Keyboard
Mouse
Monitor
CPU
Printer
Hard Disk

Types of Hardware:

Input Devices
Output Devices
Processing Devices
Storage Devices

Software

Software is a set of programs or instructions that tell the computer what to do.

Types of Software:

System Software
- Controls computer operations
- Example: Windows, Linux, DOS
Application Software
- Used by users for specific tasks
- Example: MS Word, Excel, Paint, Browser

3. Function of Motherboard Components and Various Processors

Motherboard

The motherboard is the main circuit board of a computer where all components are connected.

Main Components of Motherboard

CPU Socket
- Holds the processor
RAM Slots
- Used to install RAM
Chipset
- Controls data flow between CPU, memory, and devices
BIOS/UEFI Chip
- Starts the computer (booting process)
Expansion Slots
- Used for graphics card, sound card, etc.
Power Connector
- Supplies power to motherboard

Processors (CPU)

The processor is the brain of the computer.

Functions of CPU:

Performs calculations
Controls all operations

Main Parts of CPU:

ALU (Arithmetic Logic Unit) – Performs calculations
CU (Control Unit) – Controls operations

Types of Processors (Examples):

Intel Core i3, i5, i7
AMD Ryzen
Pentium
Celeron

4. Various Input Devices and Their Features

Input Devices

Devices used to enter data and instructions into the computer.

Device	Features
Keyboard	Used to type text and numbers
Mouse	Used to point, click, and select
Scanner	Converts paper documents into digital form
Microphone	Used for voice input
Webcam	Used to capture images and video
Barcode Reader	Reads barcode data

5. Various Output Devices and Their Features

Output Devices

Devices used to display results from the computer.

Device	Features
Monitor	Displays text and images
Printer	Produces hard copy
Speaker	Outputs sound
Headphones	Personal audio output
Plotter	Used for large drawings

30 MCQ Questions (CBT – Skill India / ITI Level)

MCQs

A computer is a ______ machine.
a) Mechanical
b) Electrical
c) Electronic
d) Manual
Ans: c
Which part is known as the brain of computer?
a) RAM
b) Monitor
c) CPU
d) Keyboard
Ans: c
Which device is used to input text?
a) Monitor
b) Keyboard
c) Printer
d) Speaker
Ans: b
Hardware can be ______.
a) Touched
b) Downloaded
c) Copied
d) Stored online
Ans: a
Software is a set of ______.
a) Wires
b) Programs
c) Chips
d) Circuits
Ans: b
Which is system software?
a) MS Word
b) Paint
c) Windows
d) Browser
Ans: c
Which software is used for typing letters?
a) Excel
b) Word
c) Paint
d) Notepad
Ans: b
Motherboard is also called ______.
a) Hard disk
b) Main board
c) Power board
d) Output board
Ans: b
Which component stores temporary data?
a) ROM
b) Hard Disk
c) RAM
d) Pen Drive
Ans: c
CPU stands for ______.
a) Central Process Unit
b) Central Processing Unit
c) Control Processing Unit
d) Computer Process Unit
Ans: b
Which unit performs calculations?
a) CU
b) RAM
c) ALU
d) BIOS
Ans: c
BIOS is stored in ______.
a) RAM
b) ROM
c) Hard Disk
d) Cache
Ans: b
Which is an input device?
a) Printer
b) Monitor
c) Keyboard
d) Speaker
Ans: c
Mouse is a ______ device.
a) Output
b) Storage
c) Input
d) Processing
Ans: c
Which device gives hard copy?
a) Monitor
b) Printer
c) Speaker
d) Scanner
Ans: b
Scanner converts ______ into digital form.
a) Sound
b) Video
c) Paper
d) Signal
Ans: c
Which is an output device?
a) Mouse
b) Keyboard
c) Monitor
d) Scanner
Ans: c
Webcam is used for ______.
a) Printing
b) Typing
c) Capturing images
d) Storage
Ans: c
Which processor company is AMD?
a) Intel
b) Microsoft
c) Apple
d) IBM
Ans: b

AMD is a ______ company.
a) Software
b) Processor
c) Printer
d) Scanner
Ans: b
Which part connects all devices?
a) CPU
b) Monitor
c) Motherboard
d) RAM
Ans: c
Which memory is permanent?
a) RAM
b) Cache
c) ROM
d) Register
Ans: c
Which device is used for sound output?
a) Microphone
b) Speaker
c) Scanner
d) Keyboard
Ans: b
Which is application software?
a) Linux
b) Windows
c) MS Excel
d) DOS
Ans: c
ALU stands for ______.
a) Arithmetic Logic Unit
b) Automatic Logic Unit
c) Advanced Logic Unit
d) Arithmetic Link Unit
Ans: a
Which device reads barcodes?
a) Scanner
b) Barcode Reader
c) Mouse
d) Printer
Ans: b
Which device stores data permanently?
a) RAM
b) Cache
c) Hard Disk
d) Register
Ans: c
Plotter is used for ______.
a) Typing
b) Sound
c) Large drawings
d) Scanning
Ans: c
Keyboard is used to enter ______.
a) Sound
b) Image
c) Data
d) Power
Ans: c
Control Unit controls ______.
a) Storage
b) Input
c) Operations
d) Output
Ans: c
CBT stands for ______.
a) Computer Based Test
b) Common Basic Test
c) Computer Board Test
d) Central Based Test
Ans: a

CITS COMPUTER SOFTWARE APPLICATION TRADE

ITI (Trade-COPA) Day-5