SEE1223 DIGITAL ELECTRONICS

Topic outline

• General
  

  General

  Lecturer : Ab Al-Hadi Ab Rahman, Muhammad Arif Abd. Rahim Zulkifli Md. Yusof Semester : Semester I 2011/2012
  Objective To introduce students to basic techniques in designing and implementing complex digital systems. Synopsis This course is a continuation from basic digital electronic course (SEE 1223). It emphasizes on techniques to design, analyze, plan, and implement complex digital systems using programmable logic, with specific focus on programmable logic devices. In order to facilitate learning process, a computer-aided design (CAD) software is used throughout the course. Some practical or almost actual environment problems and solutions are provided.
  This work, SEE1223 Digital Electronics by Ab Al-Hadi Ab Rahman, Muhammad Arif Abd. Rahim and Zulkifli Md. Yusof is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License

  
  
• Topic 1
  

  Topic 1

  Chapter 1 : Introduction (1 hour)

  Differences between analogue and digital system. Advantages and disadvantages of both systems.

  Chapter 2 : Number systems (5 hours)

  Decimal, binary, octal and hexadecimal number systems. Conversions between number systems.

  • Introduction File
  • 1- Number System File
• Topic 2
  

  Topic 2

  continue Chapter 2

  Binary codes - BCD 8421, Gray, ASCII, ECBDIC. Representation of negative numbers - sign and magnitude, 1’s complement and 2’s complement. Arithmetic operations using 2’s complement representation

  • Number Systems_2 File
• Topic 3
  

  Topic 3

  Chapter 3 : Logic gates and Boolean Algebra (6 hours)

  Basic gates – NOT, Buffer, OR, AND, NAND, NOR, Exclusive-OR and Exclusive NOR. Gate symbols, truth tables and Boolean operations, universal gates. Boolean algebra - Boolean’s and De Morgan’s Theorems.

  • Logic Gates and Boolean Algebra_1 File
• Topic 4
  

  Topic 4

  continue Chapter 3

  Minterm, maxterm, canonical (standard) SOP and POS and simplified representations of Boolean functions. Conversion of AND-OR circuits to NAND-NAND and OR-AND to NOR-NOR. De Morgan equivalent circuits.

  • Logic Gates and Boolean Algebra_2 File
  • Logic gates and Boolean Algebra_3 File
• Topic 5
  

  Topic 5

  Chapter 4 : Combinational Logic Circuit Design (6 hours)

  Simplification of Boolean functions using Karnaugh map technique for 2 to 4 variables.

  • Combinational Logic Design_1 File
• Topic 6
  

  Topic 6

  continue Chapter 4

  • Combinational Logic Design_2 File
• Topic 7
  

  Topic 7

  Chapter 5 : MSI Circuits (6 hours)

  Multiplexers, multiplexer expansion, 74×153 and 74×151 devices. Demultiplexer and decoders, decoder expansion.74×138 and 74×139 devices. Encoder, priority encoder, 74×147 device. BCD-to-7-segment decoder, 74×247 device.

  • MSI_1 File
  • MSI_2 File
• Topic 8
  

  Topic 8

  continue Chapter 5

  Implementation of logic functions using multiplexers and decoders. Adders - half-adder, full-adder, ripple adder, 74×83 device. Comparators, 74×85 devices.

  • MSI_3 File
• Topic 9
  

  Topic 9

  Chapter 6 : Flip-flop (6 hours)

  Differences between combinational and sequential circuits. SR latch, Gated SR latch, Gated JK latch.

  • FF_1 File
• Topic 10
  

  Topic 10

  Chapter 6 (continue)

  JK flip-flop, D flip-flop, T flip-flop.74×74 and 74×76 devices. Preset and clear functions..

  • FF_2 File
• Topic 11
  

  Topic 11

  Chapter 7 : Counters and Shift Registers (6 hours)

  Synchronous and asynchronous counters - ripple counter, design of a synchronous counter using D flip-flops. 74×293 and 74×163 devices.

  • CSR_1 File
• Topic 12
  

  Topic 12

  Chapter 7 (continue)

  Register - shift registers (SISO, SIPO, PISO, PIPO). Shift register counters (Johnson and Ring), 74×164, 74×165, 74×194, 74×195 devices.

  • CSR_2 File
• Topic 13
  

  Topic 13

  Chapter 8 : Semiconductor Memories (3 hours)

  Random-Access Memories (RAMs), Read-Only Memories (ROMs) Programmable ROMs - PROMs, EPROMs and EEPROMs, Flash memories, 2764, 2864 and 6264 memory devices. Memory expansion, applications.

  • Memory File