software installation, troubleshooting and maintanance




SOFTWARE INSTALLATION, TROUBLESHOOTING AND MAINTANANCE
Computer is an electronic machine that has an ability to receive (input) data, process output and store data. Example of computers are
  • Mobile phone
  • Human brain
  • Electronic calculator
  • Digital watch
PARTS OF COMPUTER
  1. Computer software
  2. Computer hardware
Computer software  a part of computer which can only be seen but can not be touched. E.g programs, software
Computer hardware a part of computer which can be seen and touched. E.g monitor, keyboard
Installation The process of making program ready for execution (ready to work)
Troubleshooting The process of determining or finding problem to the computer.
Maintenance The process of solving a problem in the computer.
How to power ON and OFF the computer
  1. to switch ON
  • press the “ON” button
  • if there is need of a password / pin enter
  1. to switch OF
Go to
  • start menu (flag key)
  • shutdown
computer cables
           cables is a wire / hard device (iron material based) which is used to transfer either data, information or electrical signals from one part to another.
Types of cables in  a computer
  • The VGA cable (video graphics array) This cable transfers only data or information between computer parts. E.g audio(sound), video, images, script etc.
  • Power cable Used to transfer only electrical signals between computer components (parts)
     NB;
All cables in the computer system are connected through PORTS which can be either
  1. Network port
  2. USB port
  3. Power port
  4. VGA port
INSTALLING OPERATING SYSTEM / SYSTEM SOFTWARE
OPERATING SYSTEM / SYSTEM SOFTWARE   is a program or set of instruction which controls other parts of the computer. It control how other programs arranging files and folders, controls the hardware like mouse, keyboard etc.
WINDOWS OPERATING SYSTEM   
WINDOWS  is a software or program that control all programs and computer system in general.
The following are windows version:-
  • Window NT
  • Window XP
  • Window 98
  • Window 7
  • Window 8
  • Window 10
WINDOWS 7 INSTALLATION
Installing operating system procedures:-
  • Open the CD tray
  • Put a window CD and close CD tray
  • Switch off the computer while holding F12 button
  • Wait until the program responds
  • Accept the installation and follow instruction
  • Select language and finishing installation
  • Make system rating
SYSTEM RATING  a process of enhancing the computer performance functionalities.
Things to use in installation
  • CD with window operating system / flash drive
  • Network drive
  • External hard disk
Things to consider before installing operating system
  • Size of the memory (hard disk)
  • Processor speed and
  • RAM
DESKTOP ICON USE AND TECHNIQUES
 ICON   is a symbol or a picture on the computer desktop/screen that represents a particular computer function. E.g a folder icon, internet explorer icon, adobe reader icon etc.
The following are options that can be displayed when right clicking either icon itself or other parts of the desktop (plain part)
  • Open           
  •   paste shortcut                  
  •   properties
  • View  
  • copy shortcut                   
  • open with
  • Sort by 
  • display setting                   
  • share with
  • Refresh   
  • graphics option                 
  •  send
  • Copy
  •  personalize
  • Cut 
  • delete
  • Paste
  •  rename etc
  1. OPEN This is used to command, direct the program or folder / icon to be opened.
  2. VIEW used to change an outlook of the individual icon or all icons of the desktop. E.g change icon to be seems
  • Small size
  • Large size
  • Medium size
  • Arrange icons to grid
  • Auto arrangement
  • Show or hide icons
  1. SORT BY used to make arrangement of icons either according to
  • Name ( A to Z or Z to A )
  • Size
  • Item type
  • Date modified
  1. Refresh used to allow immediate changes to an icon or program. E.g to make programs responds faster shortcut press F5 button 
  2. New used to create a new icon, folder, file etc. e.g
  • – Right click
  • – New
  • – Folder etc.
DISK PARTITION   is an activity or process of dividing a disk (local disk C) into several parts.
The following are the reasons for making disk partition
  • To separate data between personal data and the system files/data (O.S)
  • To improve data performance since information flow easily when huge location
  • For making easy backup and recovery of data
How to make disk partition in a computer (internal HDD)
Procedures:-  Go to
  • – My computer
  • – Manage
  • – Disk management
  • – Select the disk you want to make partition
  • – Shrink volume/make new simple volume
  • – Change available MBs to shrink into GBs you need to use
  • – Mark a partition as active
  • – Ok/apply/yes.



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computer base

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A. DESCRIBE COMPUTER AND IT’S FUNCTION COMPUTER    is   an   electronic   device   for storing and processing data,typically and binary form according to the instruction given to it in a variable program.  There are basically for basic function of computers: 1. INPUT   items   external to a system (such as a process) that is transformed by the system. Example of input devices are webcam, keyboard, camera, flash disk etc 2. PROCESSING processor  is   a   logic circuitry that responds to and process the basic instruction that drive a computer. Functions of a processor Fetch Decode Execute  Writeback 3. OUTPUT  a   result produced by a computer that is internal to the system. Examples of output device are speaker, printer, webcam, monitor,projector etc B. DESCRIBE CHARACTERISTICS OF A COMPUTER  The characteristics of a computer that have may be them so powerful  ACCURANCY ...
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