Noa's Business Class

Question 1

what is a computer?

Answer 1

a computer is an electronic device that processes, stores and retrieves data.

Question 2

what do computer systems need to have?

Answer 2

Computer systems must have hardware and software

Question 3

what are the 4 functions of a computer?

Answer 3

1. Input
2. Processing
3. output
4. storage

Question 4

what is hardware?

Answer 4

Hardwear is all physical devices that make up a computer system

Question 5

where can hardware devices be?

Answer 5

They can be inside a computer case or connected to the case via cables

Question 6

what do hardware devices that are inside the case include?

Answer 6

1. Motherboard
2. microprocessor
3. RAM
4. power supply
5. hard drive

Question 7

what are input devices?

Answer 7

input devices are hardware devices that allow the user to input data and instructions to a computer system

Question 8

what are the most common input devices?

Answer 8

keyboard, mouse, mouse alternatives (touchpad, trackball), microphone, digital camera, webcam, scanner, touch screen, stylus, game controllers
(steering wheel, joystick), barcode reader/scanner.

Question 9

what are output devices?

Answer 9

output devices are hardware devices that allow the user to receive data from a computer system

Question 10

what are the most common output devices?

Answer 10

monitor (screen), headphones, speakerphones, printer, projector and others

Question 11

how many categories are there for storage and what are they?

Answer 11

there are 2 categories of storage. they are short-term storage and long-term storage.

Question 12

what is short-term storage?

Answer 12

short-term stores data and instructions as long as the program is running or the computer system is on

Question 13

what is long-term storage?

Answer 13

long-term stores data and instructions even after the computer system is shut down. Files are stored until the user deletes them.

Question 14

what is the short-term storage in a computer? and what does it do?

Answer 14

Short-term storage in a computer system is the RAM (random access memory).

It stores data/instructions as long as the program is running or the computer is on.

Question 15

what do Long-term storage devices include? and what do they do?

Answer 15

they include…
hard drive
USB flash drive
CD and DVD
Blu-ray disk
SD card

They store files until the user
deletes them.

Question 16

what are CDs, DVDs, and Blu-ray disks referred to as?

Answer 16

CDs, DVDs, and Blu-ray discs are all referred to as optical discs

Question 17

what are the different types of computer systems?

Answer 17

computer systems aren’t just computers. They come in many different shapes and sizes.

ex…
desktops, laptops, tablets, smartphones, smartwatches,
game consoles and TVs.

Question 18

how can computer systems be classified?

Answer 18

Computers can also be classified based on the manufacturer or the operating system it runs.

Question 19

what are 2 popular categories of classified computers?

Answer 19

PCs and Macs

Question 20

what does a Power Supply unit in a computer system do?

Answer 20

it converts the electrical signal from the wall outlet to the type needed by a computer.

Question 21

what does the cooling system (Fan) do?

Answer 21

it expels warm air from inside the case and draw cool air from outside to cool
components including the processor.

Question 22

what do expansion cards do?

Answer 22

they add and improve certain functions