Page 19 - Computer - 3

Speakers

Speakers are output devices that produce audio
output. They are used to play music and sounds.

Speakers can be headphones or desktop speakers.
Headphones Desktop speakers

Knowledge Discovery Subject Enrichment

To play sound through speakers or headphones, a device

called Sound card must be installed on the motherboard.
The sound card converts all computer signals into sound
that we hear through the speakers.

Projector

Projector is an output device used to display the output
displayed from the monitor onto a screen or a wall. It is used for
displaying presentations or movies for a large group of people. Projector

Try This Logical Thinking

Unscramble the given letters to form names of different input and output devices.

1. NERCANS ________________________
2. ROMINOT ________________________
3. HOMIROCNEP ________________________

4. OTREROCPJ ________________________
5. YTKICOSJ ________________________

Processing Devices
The hardware devices that are used to process the input and

convert it into output are called Processing devices. The most
important processing device in a computer is the Central

Processing Unit (CPU). Also called the microprocessor, it controls
all other hardware connected to the computer. It also manages

the overall functioning of the computer system. CPU Chip
The CPU is divided into three main components:

• Control Unit (CU)
• Arithmetic and Logical Unit (ALU)
• Memory Unit (MU)

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