Input /Output Devices Questions and Answers

Answer: D

Correct answer: Writing tablet

A writing tablet, or graphics tablet, senses the position of a stylus on its surface, so it captures both the character being written and where on the surface it was written - the coded character and the positional coordinates the question asks for.

Answer: C

Correct answer: Printer

A hard copy is output on paper, and the printer is the device that produces it. A CRT or console shows output on a screen, which is soft copy, and a card reader is an input device.

Answer: A

Correct answer: Input

Data supplied to a program from outside is its input; what the program sends back is its output. Throughput is a measure of how much work a system completes, and a report is one form output may take.

Answer: A

Correct answer: Input

An input device is the one through which information is put into the machine - keyboard, mouse, scanner, microphone. Output devices deliver results in the opposite direction.

Answer: D

Correct answer: Vertical

A joystick is a stick standing upright in a base; tilting it from the vertical in any direction moves the cursor that way. The other three words describe orientations that would leave nothing to tilt.

Answer: D

Correct answer: display

The display is the general term for the screen on which output appears; monitor and screen are the everyday names for the same thing. A printer produces output on paper and a hard disk stores it.

Answer: B

Correct answer: computer gaming

A joystick reports the direction and amount by which it is pushed, which suits continuous control of movement - steering, flying, aiming - and that is chiefly what games need. Text entry needs a keyboard and drawing needs a mouse or a graphics tablet.

Answer: B

Correct answer: page printer

A laser printer composes and prints a whole page at a time, which is what makes it a page printer. Line printers and band printers produce one line at a time, and a dot matrix prints one character at a time.

Answer: D

Correct answer: bar code

The pattern of parallel lines of varying width printed on packaged goods is a bar code; it encodes the product number for a scanner to read. OCR reads ordinary printed characters, and a scanner is the device that reads the code rather than the code itself.

Answer: C

Correct answer: input device

A bar code reader scans a printed code and sends the number it encodes into the computer, so it supplies data to the machine. That is what makes it an input device rather than a processing or storage one.