1. Intro to Computers
1b Intro to Computers.ppt

2. Bits & Bytes
We Add…. 1
+ 2
= 3

3. However the computer can only work by a series of on/off, e. g
However the computer can only work by a series of on/off, e.g., based boolean logic--yes/no

4. this is a form of boolean logic
(write this down)
the two states (on/off) the computer requires to do everything utilizes binary code
this is a form of boolean logic

5. Therefore, to add 1+2…
the computer must add in binary (8 bits)

6. Computer Addition =
for every single alphanumeric character (any letter); has an eight digit “number”
8 bits for one byte

7. 8 bits = 1 byte
1,000 bytes = 1 Kilo Byte
1,000 Kilo Bytes = 1 Meg
1,000 Meg = 1 Gig
1,000 Gig = 1 Terabyte

8. A common 3.5 inch floppy disk - 1.44 meg (not used anymore)
CD’s are usually 700 meg
DVD’s are around 4.7 gig
Hard disks (inside computers)
2 gig (old) to 1.5 Terabyte
USB portable drive (sticks) range from 64 meg (old) to 32 gig (and more)

9. Remember!! Save your work in the…
….your “Comm Tech” Folder within the “H:” drive (create a folder)
Back-up your files onto a disk or memory stick (jump drive)