IT102

The CPU is made of the CU and The ALU, The CPU works with the RAM which is responsible for storing instructions that should be executed.

The Role of the CU is

• Mathematical calculations

• Store information

• read intructions

• fetch instructions then decode them

There are a number of types of printers.

Dot matrix prints to a paper by striking it

Laser prints through the use of a toner which has dried ink powder and heating

Inkjet prints by spraying ink

Put them in order from best to worst

• Dot matrix, Laser, Inkjet

• Laser, Inkjet, Dot matrix

• Laser, Dot matrix,Inkjet

• Dot matrix, inkjet and laser.

Embedded systems are small pieces of computing devices.

Consumer electronics include MP3 players, television sets, mobile phones, video game consoles, digital cameras, GPS receivers, and printers. Household appliances, such as microwave ovens, washing machines and dishwashers, include embedded systems to provide flexibility, efficiency and features.

People mostly use _________________ to input data but they are then stored on a large computer called a ___________________. You can then access your data from any where once it's on this large system.

• Desktop and Mainframe

• Desktop and Supercomputer

• Embedded systems and Mainframe

• Desktop and Supercomputers

A. the blue screen you some times get when your turn on your computer has an option which is like a menu called the BIOS (basic input output system) that stores the options you may select for your system. The BIOS is stored on a non volatile storage device

B. All the applications you are using will be closed if you shut off your system. This is because they are stored in a memory which is known as volatile.

Select the storage device for both

• A. RAM and B. ROM

• A. ROM and B RAM

A. Storage your systems needs to do its processes and store its setting are from devices such as ROM and RAM.

B. Storage you need to store your files are like Hard Drives, CD, DVD, Memory card, SSD.

• A. Primary and B Secondary

• A. Secondary and B. Primary

Companies often use Magnetic Tapes to store back ups of their data offsite. Because it can store up to 6 TB.

the retrieval process is slow but it's cost effective. They are similar to Cassettes.

Which secondary storage media device would you recommend to company that wants to be able to access data that is not physically stored at the company.

• Cloud storage

• Memory card

• Hard Drive

Secondary storage comes in all types.

Optical which is basically CD, dvd etc, laser for reading and writing. A disk is spin to be read

Flash which is basically thumb drive, memory card, SDD

Magnetic which is basically Hard drive, Magnetic tapes and Floppy disk. A disk or reel is spin to be read

If your friend ask you, which would you tell him to keep in mind when buying a system that retrieves data fast.

• SSD

• DVD

• Hard Drive

• Magnetic Tape

Bluray is a type of disk which is similar to a DVD, it is commonly used in the movie industry. It can store up to 50 GB.

Which category would you say it falls in.

• Magnetic

• Flash

• Optical

You work for very private company and they decide to switch to cloud storage to store data they don't want to be hacked, which one may cause worries.

• The monthly fee

• Data is encrypted by the company

• The password you created to log into the cloud

• You can only access data with the internet

when programmers makes Operating Systems, they make them for different type of CPU.

You go to buy a OS and it says 64bit and your CPU is 64bit. These numbers represents the word size. What does this mean?

• The amount of bits the ALU can count

• number of bits processed by a computer's CPU in one go

• The speed of the RAM