Microsoft Word - Digital Logic Design v_4_6a

 Medium Scale Integration, MSI

 PAL--Programmable Array Logic, GAL--Generic Array Logic, EPROM--Erasable

Programmable Read Only Memory, ADDER, COUNTER)

• 1,000s to 100,000s of gates.


• Typically, the vendor provides information in the form of a data sheet

 Large Scale Integration (LSI)

• 100,000s to Millions of gates


• Typically implements complex functionality


• Processors such as special function controllers and interface chips

 Very Large Scale Integration (VLSI)

• Millions to Billions of gates


• Typically includes extensive functionality


• Processors such as Intel’s Pentium are examples of VLSI.

 Design / Analysis tools

• We will be using manual processes for most of this text to design/analyze digital circuits
  in order to gain in-depth understanding of logic design.


• The final section of this text is dedicated to the use of Hardware Description Language
  (HDL) to automate design, simulation, implementation, and analysis and verification
  process.

1. Block Diagram

A B

Input Output

A B

0

1

1

0

2. Truth Table

A

B

t

Propagation Delay

3. Timing Diagram

A

B

4. Equivalent Circuit

+5 V

GND