Computer studies analysis of questions and answers - ATIKA SCHOOL

State the functions of each of the following keys on the computer keyboard:

12/1/2021

State the functions of each of the following keys on the computer keyboard:

(a) backspace;

moves the display cursor one position backwards, deletes the character at that position, and shifts back the text after that position by one position

(b)insert (ins)

When insert is selected, keys add characters to the screen at the cursor (insertion point) without deleting those already there. When typeover is selected the new characters type over the old, deleting them as they go

State the functions of each of the following keys on the computer keyboard:

State two circumstances under which warm booting of a computer may be necessary.

7/1/2021

State two circumstances under which warm booting of a computer may be necessary.

Reasons for warm booting a computer

when computer hangs
when a program encounters an error
during the installation of new software for the installation to be complete
during the installation of hardware so that the drivers can be activated.

State two circumstances under which warm booting of a computer may be necessary.

Name and explain the function of the keyboard keys represented by the following symbols

2/1/2021

(a) Name and explain the function of the keyboard keys represented by the following symbols (2mks)

(i) Tab Key Used to remove text/ cursor to the right by a fixed or present number of spaces

(ii) Enter / carriage Return key Used to initiate command on the screen i.e. Pressed after each command.

(iii) Shift Key Used to change letter case. Also used in conjunction with other keys for various Commands.

(b) Simulation is one of the application areas of computers

Name four toggle keys on a standard computer keyboard

31/12/2020

Name four toggle keys on a standard computer keyboard

Toggle keys
Caps Lock .
Num Lock
Insert key/OVR
Scroll Lock

Name four toggle keys on a standard computer keyboard

What is a computer keyboard?

30/12/2020

(a) (i) What is a computer keyboard? (1mk)

Input device with keys for keying in data in the form of characters

List four types of keys found on a computer keyboard. Give an example of each. (4mks)

Alphanumeric
Function
Numeric key pad
Special character
Cursor control

List four types of keys found on a computer keyboard. Give an example of each

State the functions of the following keys on the computer keyboard; Backspace and Insert (ins)

29/12/2020

State the functions of the following keys on the computer keyboard; Backspace and Insert (ins)

Backspace – to delete a character to the left of the cursor
Insert (ins) – when the key is depressed editing is in overtype mode. Any new text typed in the middle of a line is inserted between existing text while the existing text disappears/is deleted.

State the functions of the following keys on the computer keyboard; Backspace and Insert (ins)

Describe the computer booting process.

29/12/2020

Describe the computer booting process.

The internal power supply turns on and initializes.
The BIOS performs the power-on self test (POST). If there are any fatal errors, the boot process stops
The BIOS the looks for other devices’ ROMS to see if any of them have BIOSEs. Normally, the IDE/Ata hard disk BIOs will be found and executed. If any other device BIOSes are found, they are executed as well
The BIOS begins the search for a drive to boot from
Having identified its target boot drive, the BIOS looks for boot information to start the operating system boot process

Describe the computer booting process.

Suggest how computers may in future be made more users friendly for persons that are blind and without hands

24/12/2020

Suggest how computers may in future be made more users friendly for persons that are:

Blind

Voice - to - Text

Computers that respond to touch and sound (voice)/Braille keyboard

State two reasons for system reboot.

20/12/2020

Why do systems reboot?

Recover from a problem such as system hung, grub
So that the computer can handle maintenance services such as backing up and restoring data
Due to power outage
Add or remove hardware
Prompts the user to save his/her work
Customize CMOS settings
Change Kernel parameters
Repair system configuration files
Start a bootable disk
Check disk for errors
Start with another operating system

reasons for system reboot

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