CIS110 Introduction

PCs Are Dumb

1. PCs are dumb

Consider the following characters that look alike to us

· zero 0 = 00110000

· upper case O = 01001111

· lower case o = 01101111

2. But they are very fast

· 1,000,000,000 instructions per second

· 1 instruction in a “nano second”

· it would take me 30+ years to do 1,000,000,000 instructions

3. They have a perfect Memory

· IF you save your work!!!!!!!!

· C: ¹ RAM

What happens when a PC starts up

· POST

· Find The operating system

· load the operating system

Drive Glossary

· C: - local to the PC where you are working

· H: - your home drive

o accessible anywhere on campus

o you can do anything i.e. save, change or delete files

· S: - the shared drive

o accessible anywhere on campus

o you can only read or copy files – NOT CHANGE THEM

o our material will be in S:/courses/cis110 . . .

· load the operating system