1. EE-100 Microprocessors Dr. Reyer S-300 (414) 277-7347
More “controllers” than PCs
Standard EE building block
Requires hardware and software (using a programming language)

2. Where are they used? Cameras Microwave ovens
Cars (brakes, ignition, alarm)
Cell phones
TVs, radios, VCRs, stereos
MP3 players
PCs
Everywhere!

3. Hardware Complexity and speed depend on requirements
What needs to be measured and controlled?
Can be embedded inside nearly any product

4. Task Example (toaster)
A. Is toast-down switch on?
B. Engage catch to hold bread down
C. Turn on heating element
D. “Read” the desired doneness control
E. “Read” the doneness sensor
F. If doneness sensor < desired doneness go to D
G. Turn off heating element
H. Release catch and let toast pop up
I. Go to A
NOTE -- Is there any danger is step F? What if the toast never browns? Should there be a timer too?

5. Software (program) Programs are a sequence of logical steps
Tasks to be performed are specified by the program
EE’s routinely write custom software

6. Microprocessor System Connections

7. “Editor” Software for PC
To write a program for our system, an editor must be used on the PC
Editor will also “download” the program to the microprocessor system and run it
Get software from “Downloads” at
Other useful information for this experiment is there too