1. Technology Applications Mr. Moses
Computer Hardware
Technology Applications
Mr. Moses

2. Objective
To understand how the parts of a computer work together to help us perform tasks every day

3. Objective Describe the three basic tasks a computer system performs
Define the commonly used computer terms processing, CPU, input device, output device, and storage device
Explain the purposes of the CPU and memory
List the common devices for input, output, and storage and explain their purposes

4. Two groups of Computer parts
Hardware
Computer hardware is made up of the physical parts of a computer system.
Hardware consists of the parts you can actually touch, hold, and move.
Software
Computer software consists of the instructions, or programs, that a computer uses to tell the hardware what to do.

5. Three basic jobs
It receives data (information) to be processed. (For example, your teacher might enter your test scores into a computer.)
It processes the data in some way. (The computer might calculate your grade based on your test scores.)
It outputs the results of the processing. (It might display your final grade on your teacher’s monitor.)

6. Computer Hardware The computer uses many different types of hardware.
Here are some of the important ones:
Central processing unit, or CPU
Memory
Input devices
Output devices
Storage devices

7. CPU CPU (central processing unit)
The most important part of any computer is the Central Processing Unit (CPU).
The CPU is the brain of a computer.
The CPU processes data.
Most computers are classified by the type of CPU they use.

8. Input Devices
Input devices allow data to be entered (bring in data) into a computer system. The information is then ready for processing.

9. Input Device
The keyboard is the most common input device.

10. Input Device
A mouse is a common input device.

11. Input Device
As computers get more sophisticated, they will be able to recognize the user's voice.
The microphone will eventually replace the keyboard and mouse as the most used input device.

12. Input Device
Low cost web cameras like the one pictured below can be used for communication with family, businesses, or friends across the Internet.

13. Input Device
A scanner is a device that can read text or illustrations printed on paper and translate the information into a form the computer can use.
A scanner works by "digitizing" an image and placing it on the computer as a file.
Scanner Apps can be used on a smart phone
They use the built in camera for scanning

14. Input Device
A digital camera that does not contain any film but records the image as a digital object.
The image is then downloaded into a computer or docking station.

15. Output Devices
Output devices deliver the results of processing in a form that people can understand.

16. Output Devices
Monitors allow the user to see the results of the computer processing their information.
Monitors come in different sizes and resolutions.

17. Output Device
Printers give the computer user a "hard copy" of the results of the computer processing the input.

18. Input & Output Devices
Network cards, modems, and routers are dual purpose boards.
They allow the user to obtain information from a network and also to transmit information to a network.
These cards are classified as both input and output devices.
Touch screen monitors

19. Storage Devices
Storage devices store information so that it can be used by the computer at a later time.
Examples of storage devices include hard drives, flash drives, CD-ROM drives, and DVD- ROM drives.

20. Storage Devices
A hard drive is where data is placed or read by small magnetic head that float over the spinning platters.

21. Storage Devices - Examples
Flash Drives
External Hard Drives

22. Storage Devices
CD (compact disc) is a thin metal disc used to digitally store data (such as music, images, or programs) for playback.
Some types of CD-ROM drives let you write your own data onto compact disks (CD).
Types of compact disks
CD-R (Recordable)
CD-RW (ReWritable)

23. Memory RAM ROM RAM stands for Random Access Memory.
RAM is temporary storage space on chips in your computer.
RAM is lost when the computer is turned off.
ROM
ROM stands for Read Only Memory.
ROM permanently stored data.
Stores the critical programs, such as the program used to boot the computer.

24. Activity!
Complete

25. QUESTIONS?????