Our Hardware Unit Notes for Quiz

1. Hardware/Software Unit

2. Computers in Our Lives
1. Home
2. Library
3. School
4. Church
5. Macy’s store

3. Different Types of Computers
1. Laptop
2. Desktop
3. Handheld

4. Computers Affect Our Lives
1. Students can type up essays and homework on computers
2. You can interact with people by e-mail or face-to-face.
3. You can order things online so you don’t have to go to a
store.
4. You can look up information on the internet.
5. You can play games or check videos on computers.

5. Parts of a Computer
CPU
(Central
Processing Monitor
Unit)
Keyboard Mouse

6. Definition
All of the components are known as hardware. Hardware are
the pieces you can touch. Of course, computers need
instructions to run and do certain tasks. These instructions are
packaged into programs. These programs are called software.
Software is the programs that make the computer run.
List 5 pieces of software:
1. First Class
2. Internet Explorer
3. Google Earth
4. Microsoft Word
5. Microsoft PowerPoint

7. Monitors
 Looks like a TV
 Measured in inches diagonally across the screen.
 CRT- CathodeRay Tube (largest)
 LCD- Liquid Crystal Display (thin)
 TFT-LCD- Thin Film Transistor-Liquid Crystal Display

8. CPU- Central Processing Unit
 The brains of the computer!
 The processor determines how fast your computer performs
tasks. It is measured in Hertz.
 A HERTZ (Hz) is a measurement of cycles of electricity per
second. The more hertz your computer has, the faster it
can process.
 Millions of hertz: MHz
 Billions of hertz: BHz
 Processors can be vertical or horizontal.

9. Hard Drive
 Where all your files and software are stored
 Size of your hard drive is measured in bytes.
 A byte is the size of one character. Name a character. M
 A byte can be broken down into the smallest form of
measurement on your computer. The measurement is called a
bit.
 A bit is a code that the computer can understand to tell it to
do something. It takes eight bits to create one byte, or letter.
BrainPop

10. Computer Measurement
Bit- smallest unit of computer measurement
Byte- one character, 8 bits = 1byte
Kilobyte
megabyte
gigabyte
Terabyte
petabyte
exabyte

11. Inside the Processor
Inside:
Hard Drive
Mother Board
Fan
Power Supply
Memory

12. Outside the Processor
 Although the disk drives and ports are inside the computer,
they are accessed from outside the computer
Space for Floppy Disk
Drive
DVD Drive USB Port

13. Input Devices
 Input devices are the things we use to enter information.
 Information is entered through a variety of input devices, ranging from
the simplest keyboards to more sophisticated voice-activated
software.
Name some input devices
1. Keyboard
2. Mouse
3. Scanner
4. Touch Screen
5. Microphone
6. Webcam
7. Digital Camera
8. Wii Remote

14. Output Devices
 Output devices are devises that allow us to see/hear our
work.
Name some output devices.
1. Printer
2. Headphones
3. Monitor
4. Speakers
5.

15. Printers
 Type of output device that allows information to be
transferred onto paper or other material.
 Types of Printers
 1. Inkjet
 2. Laser
Printer Colors
 C: Cyan
 M: Magenta
 Y: Yellow
 K: Black

16. Storage Devices
 90% of the time, we are saving our work to the hard drive.
However, many times, you need to take your work with you!
Our FIRST removable storage device was the…
 Floppy Disk
 First one was 8”, then 5 ½. It held 1.44MB (about one PowerPoint!)
 Next was the CD (Compact Disc)
Readable  CD-R (Allows computer to save only 1 time)
ReadWrite  CD-RW (Allows computer to overwrite information many times)
 Holds 700 MBs of information
 Next was the DVD (Digital Video Disk)
 Looks like a CD
 Holds 4.7 GBs of information!

17. Storage Devices cont.
 The newest way to store removable data is the Flash Drive!
 Comes in a range of sizes (125MB to 250 GBs!)
 Plugs into the USB port
 Another storage device used primarily in cameras is the
memory cards.
 Other names for the memory cards are
 Compact Flash
 Memory Stick
 XD
 SD/ Micro SD