1 - Overview of Computers

2 Components of a CPU

1. Arithmetic Logic Unit 2. Control Unit

4 Basic Operations of a Computer

1. Input 2. Process 3. Output 4. Storage

2 Types of Storage

1. Volatile 2. Non-Volatile

Storage

Basic Operation of a Computer - which is a memory that saves digital data. Examples: RAM; Hard Disks; CDs; DVDs; Flash Drives.

Input

It is a Basic Operation of a Computer - which is a data that goes into the computer.

Output

It is a Basic Operation of a Computer - which is any data that comes out of a computer.

Process

It is a Basic Operation of a Computer that converts input to output.

Control Unit

It is a Component of a CPU - which manages the operation of the CPU.

Arithmetic Logic Unit

It is a Component of a CPU - which performs arithmetic and logical operations.

Non-Volatile

It is a Type of Storage - which can remembers data even without power.

Volatile

It is a Type of Storage also called "memory" - which looses its content when the power turns off.

Output Device

It is a device that displays the output. Examples: Monitor; Speakers; Printers.

Input Device

It is a device that feeds data into a computer. Example: Keyboard; Mouse.

Compact Disc

It is a flat and round optical storage used to store data.

Digital Versatile Disc

It is a flat and round storage used to store data but it can store much more data than a Compact Disc.

Program

It is a is a set of instructions that a computer follows to perform a task.

Floppy Disk

It is a storage with thin and flexible square magnetic disk that have fabric to remove dust particles.

CD-RW

It is a type of Compact Disc - which stores data and can be reformatted using a CD Burner.

CD-R

It is a type of Compact Disc - which stores data but non-erasable.

DVD-RW

It is a type of Digital Versatile Disc - which stores data and can be reformatted using a CD Burner.

DVD-R

It is a type of Digital Versatile Disc - which stores data but non-erasable.

Programmer

It is also called a software developer - who is trained to design, create, and test computer programs.

Processor

It is also called the Central Processing Unit (CPU) - which is the brain of the computer.

Computer

It is an electronic device that process data and gives output.

Scanner

It is an input device that scans documents and converts them into digital data.

Barcode Reader

It is an input device which is an optical scanner that reads printed barcodes.

Software

It is another term for "program" which controls everything the computer does.