2. Basic Logic Functions Chapter 2 Subject: Digital System Year: 2009

3. 3 Overview Overview of basic logic function Fixed Function Integrated Circuits Introduction to Programmable Logic

4. 4 Overview of basic logic function The Comparison Function

5. 5 Overview of basic logic function con’t The Arithmetic Function

6. 6 Overview of basic logic function con’t Encoding & Decoding Function

7. 7 Overview of basic logic function con’t Data Selection Function

8. 8 Overview of basic logic function con’t Storage Function

9. 9 Overview of basic logic function con’t Counting Function

10. 10 Fixed Function Integrated Circuits IC is an electronic circuit that is constructed entirely on a single small chip silicon In fixed function logic, the logic function are set by the manufacturer and can not be altered

11. 11 IC Packages

12. 12 Introduction to Programmable Logic The Major categories of user programmable logic are PLD & FPGA

13. 13 SPLD SPLD (Simple Programmable Logic Device) The SPLD was the original PLD and still available for small scale application. Most SPLD are in one of two categories : PAL & GAL

14. 14 CPLD Essentially, the CPLD(Complex Programable Logic Device) is a device containing multiple SPLDs and can replace many fixed function ICs

15. 15 FPGA FPGA (Field Programmable Gate Array) is generally more complex and has much higher density than a CPLD. The 3 basic elements in an FPGA are the logic block, programmable interconnection and I/O block.

16. 16 Digital System Application