JSS 2 Computer Notes

Junior Secondary School (JSS) two Lesson Notes in computer studies/ICT have been prepared on the following topics below.

Computer Ethics

Definition of Computer Ethics
Computer ethics can be defined as the set of moral principles that regulate the use of computers
Responsible use of Computer and Internet
The following are the basic security measures taken to prevent damage to the computer system.
1. There must be adequate ventilation...


Safety Measures

Definition of safety measures
Safety measures are measures that the users of computers need to take to enjoy the use of computers.
These are measures put in place to protect the users (you and I) while using the computer.
They include the following:
(i) Good Sitting Posture...


Graphic Packages

Definition of Graphic Package
Graphics packages are application software that can be used to create and manipulate images on a computer
Examples of Graphic Packages
Examples of graphic packages include:
Ms Paint
Adobe Photoshop
Instant artist...


Computer Software

Definition of Software
Software is a set of instructions and procedures passed to the computer to perform certain activities or tasks. It can also
be defined as a set of instructions that direct the activities of the computer system to undertake a specific task. Unlike
hardware, computer software cannot be seen or touched...

Operating System

Definition of an Operating System
i. An operating system (OS) is system software that manages the hardware and software resources of the computer.
ii. An operating system is software that controls the overall activity of a computer.
iii. The term operating system (OS) denotes the collection of programs that act as an interface between the user’s program and the computer hardware...

Features of Paint Program

Paint is a software from Microsoft Inc. It allows one to create, customize and paint graphics or images.
Starting Paint Program
To start a paint program the following steps are to be followed:...

Units of Storage in Computer

Units of storage in a computer are the denominators used to quantify the volume of data or instructions in a computer or on a storage media.
Data can be stored in the computer through several methods using varying electronic components. Some of these components include Hard disk, Compact disk, Flash drive, Floppy disk, Random Access Memory (RAM), etc:...

BASIC Programming Language

Origin of and Features of BASIC
BASIC stands for Beginner’s All-purpose Symbolic Instruction Code. It was developed in 1960 by John Kemeny and Thomas Kurtz to teach students at Dartmouth College. It has undergone series of historical development, which has resulted in several forms of the language...


Computer Problem Solving Skills

Concept of Computer Program and Programming Language
If you want a computer to solve a given problem, you need a computer program.
A computer program is a sequence of related instructions (commands) that tell the computer how to accomplish a specific task...


Internet

Definition of Internet
Internet is a worldwide network of computers that share information.
The Internet is a global network connecting millions of computers.
It is also defined as a global system of interconnected computer networks that use the Internet protocol suite to link devices worldwide...


ICT as a Transformation Tool

Meaning of ICT
ICT is an acronym that stands for Information and Communication Technology.
Definition of ICT
1. ICT be defined as technologies that provide access to information through telecommunication...


ICT Gadgets

Definition of a ICT Gadgets
ICT gadgets are technological devices or appliances that are used in manipulating information.
Examples of ICT Gadgets ICT gadgets include the following:...


Number Base System

What is Number Base System?


Number base system is a collection of symbols and rules for representing both small and large numbers.
There are many number systems used today, some are examined below...

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