1.Introduction to Advanced Digital Design (14 marks)
What is Analog and Digital Signal? Digital System The system which works on Digital Signal is called Digital System. Ics Integrated Circuit is the circuit in which all the Passive and Active components are fabricated onto a single chip.
Classification of IC Technologies Types Device Year Functions SSI 1-100 1960 Gates, flip flops MSI 100-1000 1965 Filters LSI 1000-10000 1970 Microprocessors, RAM, ROM A/D VLSI 10000-1 million 1975 Memory, DSP
Very Large Scale Integration Introduction to VLSI Very Large Scale Integration Very-large-scale integration (VLSI) is the process of creating an integrated circuit (IC) by combining thousands of transistors into a single chip. VLSI began in the 1970s when complex semiconductor and communication technologies were being developed.
Advantages of VLSI Reduces the Size of Circuits. 2. Reduces the effective cost of the devices. 3. Increases the Operating speed of circuit. 4. Requires less power than Discrete components. 5. Higher Reliability 6. Occupies a relatively smaller area.
Applications of VLSI In today's world VLSI chips are widely used in various branches of Engineering like: Voice and Data Communication networks Digital Signal Processing Computers Commercial Electronics Automobiles Medicine and many more
Types Of Digital System Combinational Circuit Sequential Circuit
Combinational Circuit Combinational logic is a type of digital logic which is implemented by Boolean circuits, where the output is a pure function of the present input only.
Sequential Circuit Sequential logic is a type of logic circuit whose output depends not only on the present value of its input signals but on the sequence of past inputs