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Processing Device

CPU (Central Processing Unit) is a processor, sometimes called a microprocessor. It is the brain of the
computer that does all the calculations, and runs all the programs. It manages all the operations and
carries out the basic instructions which operate a computer. The three main components of CPU are:

ALU (Arithmetic Logic Unit): Performs mathematical and logical operations.
CU (Control Unit): Directs all the operations of a processor.

MU (Memory Unit): Stores data and instructions.

Output Device

The output devices are used to display the information and result of computation to the user.

Double Tap Century #Critical Thinking
21 st
Skills
Fill in the blanks.
INPUT PROCESS OUTPUT
1. 6, 7, add 6 + 7 __________
2. __________ 8 – 2 6
3. 4, 5, add __________ 9

DATA AND INFORMATION

Data refers to raw, unprocessed facts and figures that are collected for analysis, storage, or
processing. It may come in different forms such as numbers, text, sound, or images. By itself, data
has no inherent meaning.
Information is the result of processing, organising, and interpreting data. It is meaningful and
relevant to the user because it has been put into context. Information is the end product of data
that is useful for decision-making or understanding patterns.

Difference Between Data and Information

Data Information
Raw, unprocessed facts and figures Processed, organised, and interpreted data
Has no meaning on its own Has meaning and is useful
Not useful by itself Useful and relevant

Numbers, text, user inputs Reports, charts, summaries
Unorganised, raw Contextualised, meaningful

TYPES OF COMPUTER MEMORY

The data and instructions that are entered into the computer using input devices are stored inside the
memory. There are two types of memory: Primary memory and Secondary memory.

#Computers 31