Beforee Audio And Visual Input

Question 1

What is data?

Answer 1

Raw facts and figures that is meaningless to the user. Data is unprocessed

Question 2

What is information?

Answer 2

Information is processed facts and figures that is useful to the user

Question 3

What is input?

Answer 3

Input is the accepting of data into a computer system via input devices

Question 4

What is output?

Answer 4

Output is the information delivered to the user via output devices

Question 5

What is processing?

Answer 5

Processing is the conversion if data to information for output and storage purposes

Question 6

What is storage?

Answer 6

Storage is the holding of information to be used at a later date or instructions to be processed immediately

Question 7

What is a supercomputer?

Answer 7

A supercomputer is designed to process complex scientific calculations applications and are typically used for number crunching in scientific simulations, and in scientific research

Question 8

What are mainframes?

Answer 8

Mainframes are expensive, powerful computers that offer large processing and storage capacities which is less than a super computer but more than a typical desktop. Mainframes allow thousands of users simultaneously

Question 9

What are desktop computers?

Answer 9

The desktop computer was designed to stay in a single location. It is made up of a system unit, monitor, keyboard and mouse

Question 10

What is a hard drive?

Answer 10

A hard drive is a magnetic storage device that stores data via direct access

Question 11

What is direct access?

Answer 11

Direct access allows us to find and store data by going directly to the source of the data rather than going through all the data

Question 12

What is magnetic tape?

Answer 12

Magnetic tape is a real of plastic tape that is coated in metal oxide that allows data to be written and read using magnetized and magnetized spots, which is then converted to 1s and 0s

Question 13

What is cloud storage?

Answer 13

Cloud storage is the use of network servers which is accessible via the internet that allows users to store, manage and process data

Question 14

What are input devices

Answer 14

An input device is a hardware peripheral device that accepts data and places into the computer system

Question 15

What is a pointing device?

Answer 15

A pointing device is a hardware device that allows the user to control a digital pointer across the screen based on the physical movement of the device.

Question 16

What are the 4 different types of mouses

Answer 16

Optical mouse
Track ball mouse
Pointing stick mouse
Touchpad

Question 17

What are graphics tablets?

Answer 17

A physical board that detects the position of a pointing device such as a stylus on a surface

Question 18

What are touch screens?

Answer 18

Touch screens allow the users to interact with the surface via touching a pressure sensitive screen with their finger

Question 19

What are the two gaming input devices?

Answer 19

Joysticks : lever built on a base that gives a 360 degree motion and contains buttons to execute commands

Gaming pads : allows the user to move objects on the screen by using a combination of directional parts and joysticks along with buttons to execute commands

Question 20

What is a scanning device?

Answer 20

A scanning devices takes a physical item and finds a way to format it digitally, reducing human input

Question 21

What is an OMR (optical mark reader) ?

Answer 21

This allows the system to read Mark’s on paper on pre-formatted paper which is input directly into the computer system

Question 22

What is the OCR (optical character recognition) ?

Answer 22

This scanning device scans physically written words on paper and converted it into a digital text representation that can be manipulated using software in a computer system.

Question 23

What is the MICR (magnetic ink character recognition) ?

Answer 23

This is a scanning device used in banks to validate cheques. The cheque is printed using a special magnetic ink that helps verify the authenticity of the cheque.

Question 24

What are barcode readers?

Answer 24

A barcode is a set of vertical lines that have varying thickness which represent a strung of numbers. The string of numbers is also available at the base of the barcode. A barcode reader uses a laser across the barcode which reflects light and converts eash bar and thickness to a number.

Question 25

What are POS systems?

Answer 25

Pos systems utilise a barcode reader and a server which has a database built into it. When an item is scanned at a POS, it is translated into a string of numbers. This string of numbers is then compared in the database which when it is matches gives the name, brand and price

Question 26

What are QR codes?

Answer 26

A QR code means quick response code and is similar to a barcode since it holds information. QR codes can be read by cameras today especially on cell phones. QR codes can be read horizontally and vertically therefore it holds more information than a bar code.