43
Figure 1 above is a logic gate. Use it to answer questions 12 to 14.
Figure 1 represents?
- A. a NOT gate.
- B. a NAND gate
- C. an AND gate
- D. an OR gate.
44
Which of the following is not a mobile input device?
- A. Joystick
- B. Light pen
- C. Mouse
- D. Scanner
45
Output devices in a computer are those devices that send?
- A. results to the memory of the computer
- B. processed data and instructions into the computer
- C. in data and instructions into the computer
- D. data and instructions into the memory of the computer
46
The hardware of a computer does not consist of?
- A. casing
- B. mouse
- C. peripherals
- D. windows
47
The device through which the main components of the computer communicate with each other is called?
- A. keyboard
- B. memory
- C. light pen
- D. system bus
48
If the output signal of any logic gate is fed into an inverter, the results is? .
- A. NOT gate
- B. Nor gate
- C. the inverse of the output signal
- D. the same as the output signal
49
The computer memory is, measured in?
- A. bit
- B. bytฤ
- C. hertz
- D. nibble
50
The computer hardware is made up of system unit and?
- A. motherboard
- B. peripheral
- C. control unit
- D. central processing unit
51
Abacus is used for?
- A. addition
- B. subtraction
- C. addition and subtraction
- D. multiplication and division
52
The main difference between a laptop and a desktop is that, a laptop?
- A. does not have mouse while a desktop has
- B. uses USB port while desktop uses parallel port
- C. can be connected to the internet while desktop cannot
- D. contains high capacity battery that powers for extensive period while desktop has not.
53
Which of the following devices is not a micro computer?
- A. Desktop
- B. EDVAC
- C. Laptop
- D. Notebook
54
Charles Babbage was the first to?
- A. invent slide rule
- B. invent analytical engine
- C. make census machine
- D. make use of the punched card