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Computer application 1 Notes

500.00KES 200.00KES

CHAPTER ONE.
INTRODUCTION
Definition : A Computer is an electronic device that can perform activities that involve
Mathematical,
Logical and graphical manipulations. Generally, the term is used to describe a collection of
devices that function together as a system.
It performs the following three operations in sequence.
1. It receives data & instructions from the input device.
2. Processes the data as per instructions.
3. Provides the result (output) in a desired form.
Data : It is the collection of raw facts, figures & symbols.
Ex : Names of students and their marks in different subjects listed in random order.
Information : It is the data that is processed & presented in an organized manner.
Ex : When the names of students are arranged in alphabetical order, total and average marks are
calculated & presented in a tabular form, it is information.
Program : Set of instructions that enables a computer to perform a given task.
Advantages of computers :
1. High speed : Computers have the ability to perform routine tasks at a greater speed than
human beings. They can perform millions of calculations in seconds.
2. Accuracy : Computers are used to perform tasks in a way that ensures accuracy.
3. Storage : Computers can store large amount of information. Any item of data or any
instruction stored in the memory can be retrieved by the computer at lightning speeds.
4. Automation : Computers can be instructed to perform complex tasks automatically ( which
increases the productivity).
5. Diligence : Computers can perform the same task repeatedly & with the same accuracy
without getting tired.
6. Versatility : Computers are flexible to perform both simple and complex tasks.
7. Cost effectiveness : Computers reduce the amount of paper work and human effort, thereby
reducing costs.
Limitations of computers :
1. Computers need clear & complete instructions to perform a task accurately. If the instructions
are not clear & complete, the computer will not produce the required result.
2. Computers cannot think.
3. Computers cannot learn by experience

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Craft certificate in information communication technology all past papers

800.00KES 150.00KES

We have combined all ICT certificate aka code-1920 so that tutors and students of this course can easily find revision resources.You will be able to download past papers for previous years for free but you will need a small fee to access past papers for recent years.

What you will get

All KNEC ICT certificate past papers from 2010 to present

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Diploma in information communication technology all + latest past papers

1,000.00KES 220.00KES

Diploma in information communication technology latest past papers

This is an all one in one bundle containing all KNEC diploma in information communication technology past papers.We have combined all of them from the year 2010 to the latest.This is an ultimate revision bundle for all students currently pursuing KNEC diploma in ICT.

You will get all past papers for the following units

Module 1

  • 101-INTRODUCTION TO INFORMATION COMMUNICATION TECHNOLOGY & ETHICS
  • 102-COMPUTER APPLICATION
  • 103-STRUCTURED PROGRAMMING
  • 104-COMMUNICATION
  • 105-OPERATING SYSTEMS
  • 106-COMPUTATIONAL MATHEMATICS
  • 108-PROJECT

Module 2

  • 201-SYSTEMS ANALYSIS AND DESIGN
  • 202-COMPUTER APPLICATION
  • 203-OBJECT ORIENTED PROGRAMMING
  • 204-QUANTITATIVE METHODS
  • 205-VISUAL PROGRAMMING
  • 206-DATABASE MANAGEMENT SYSTEM

Module 3

  • 301-DATA COMMUNICATION AND NETWORKING
  • 302-MANAGEMENT INFORMATION SYSTEMS
  • 303-PRINCIPLES AND PRACTICE OF MANAGEMENT
  • 307-INTERNET BASED PROGRAMMING
  • 308-PROJECT
NB:Should you have any inquiry about purchasing this product,you can contact us on academica@kenyanexams.com or info@kenyanexams.com