________ keys are present on the top row of the keyboard.
Answer: A
Correct answer: Function
The function keys, F1 to F12, run along the top row above the number keys. The typewriter keys occupy the main block, the numeric keys the pad on the right, and the navigation keys the cluster between them.
Please log in or register to report this question.
Joysticks typically have a button on __________that is used to select the option pointed by the cursor.
Answer: D
Correct answer: Top
The fire or select button sits on top of the stick, under the thumb of the hand already holding it, so the user can select without letting go.
Please log in or register to report this question.
Which of the following is not an example of hardware?
Answer: D
Correct answer: Interpreter
An interpreter is a program that executes source code line by line, so it is software. Scanners, printers and monitors are all physical devices and therefore hardware.
Please log in or register to report this question.
The OCR recognises the _______ of the characters with the help of light source.
Answer: B
Correct answer: shape
Optical Character Recognition shines light on the page and reads the pattern of light and dark to work out the shape of each character, which it then matches against the shapes it knows. Size, colour and ink are irrelevant to that matching, which is why OCR can read many typefaces.
Please log in or register to report this question.
What type of device is a digital camera?
Answer: A
Correct answer: Input
A digital camera captures an image and passes it to the computer, so it supplies data to the machine. Storage is what the memory card inside it does; the camera's role in relation to the computer is input.
Please log in or register to report this question.
USB refers to
Answer: C
Correct answer: a port type
USB stands for Universal Serial Bus, and in ordinary use the term names the kind of port and connector by which peripherals attach to a computer. It is neither a storage device nor a processor, though many storage devices connect through it.
Please log in or register to report this question.
The wheel located between the two standard buttons on a mouse is used to ____
Answer: D
Correct answer: Scroll
The wheel between the two buttons rolls the view up and down a document or page. Clicking and selecting are done with the buttons on either side of it.
Please log in or register to report this question.
Which of the following groups consists of only input devices?
Answer: D
Correct answer: Mouse, Keyboard, Scanner
All three send data into the computer. Every other group contains an output device - a monitor, a printer or a plotter - which disqualifies it.
Please log in or register to report this question.
Which of these is a pointing device ?
Answer: A
Correct answer: Trackball
A trackball reports movement of a ball rotated by the hand and so positions the cursor, placing it with the mouse, touchpad and light pen among pointing devices. The other three are all output devices.
Please log in or register to report this question.
Which among the device that converts computer output into a form that can be transmitted over a telephone line?
Answer: D
Correct answer: Modem
A telephone line carries an analogue signal, so computer output must be modulated onto it and demodulated at the far end - the two operations that give the modem its name. A multiplexer combines several signals on one channel but does not convert between digital and analogue.
Please log in or register to report this question.
