What is a Track Ball ?
What is Track Ball –
- Trackball is a pointing device which is similar to a mouse.
- A ball is placed on the track ball device which is used to move the graphic cursor on the screen.
- It also contains buttons which are used to select a particular item on the screen.
- To move the graphic cursor on screen, the ball is rolled with the fingers or thumb.
- It needs not to move the whole device to move the cursor so it is often attachedwith some keyboards.
- Track balls come in various shapes with same functionality.
- Commonly three shapes are used: ABALL, A SQUARE, and A SQUARE.
- In case of ball we need to move it with the help of finger.
- In case of button pushed with finger in desired direction of the cursor movement.
- In case of button press finger to up or down & left or right to move cursor.
Advantages of track ball –
- Takes less desk space.
- Takes less arm movements than mouse.
- Doesn’t require any mouse pad & large area to move the mouse.
- Less strain on the wrist.
- Finger trip control which may offer more accuracy than mouse.
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Basic Computer Questions
Q : The main system board of the computer is called ____.
(A) Motherboard
(B) Processor
(C) Microchip
(D) None of these
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Q : Which of the following system components is the brain of a computer?
(A) Circuit board
(B) CPU
(C) Memory
(D) Network card
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Q : What is the built-in permanent memory in a computer called?
(A) RAM
(B) ROM
(C) CPU
(D) CD-ROM
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Q : Which of the following is the full form of NTFS?
(A) New Tree File system
(B) New Technology file system
(C) New Table file system
(D) Both B and C
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Q : Which of the following is not a hardware processing chip ?
(A) Processing chip
(B) printer
(C) mouse
(D) Java
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Q : The monitor of a computer is-
(A) storage device
(B) processing device
(C) input device
(D) output device
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Q : Which protocol does Ping use?
(A) TCP
(B) ARP
(C) ICMP
(D) BootP
(E) None of these
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Q : If you wish to extend the length of the network without having the signal degrade, you would use a ___.
(A) Gateway
(B) Router
(C) Modem
(D) Repeater
(E) Resonator
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Q : A series of instructions that tells a computer what to do and how to do it is called a ______.
(A) program
(B) command
(C) user response
(D) processor
(E) None of these
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Q : Verification of a login name and password is known as_____.
(A) Configuration
(B) Accessibility
(C) Authentication
(D) logging in
(E) None of these
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