数字逻辑1-1PPT课件

1、2021/6/71Digital Design Pinciples and Practices Teacher：张鹰：张鹰 Email: .2021/6/72Chapter 1: Introduction u Digital signal u Digital system u The arrangement of the text 2021/6/73Digital DesignDesign a digital system with electric circuit (Hardware design)2021/6/74Digital signalAny inf

2、ormation can be coded by digital formIn circuit design, only binary form can be usedDigital signal : Information coded by a limited string of 0 and 1 Only two state on each node in circuit at given time2021/6/75Digital signalHow are you! 1001000 1101111 1110111 0100000 1100001 1110010 1100101 010000

3、0 1111001 1101111 1110101 0100001 2021/6/76The advantage of digital signaluAny information can be code uOn each data line, the signal is very simpleuNot influenced by circumstance and deviceuCan be recorded and transmitted easily2021/6/77Digital system Any inputs and outputs can only be 1 or 0 !Use

4、logic to determine each output : 1 or 0 ? 2021/6/78Basic device in digital system Buffer xy Truth table Diagram Equation 2021/6/79Basic device in digital system NOT gate (inverter , INV) xyTruth table Diagram Equation 2021/6/710AND gate 21 xxydiagram equation Truth table Basic device in digital syst

5、em 2021/6/711OR gate 21xxyBasic device in digital system equation diagram Truth table 2021/6/712NANDbafNORbafBasic device in digital system 2021/6/713XORbababafBasic device in digital system 2021/6/714Truth tableLeft: the input combinations in binary order Right: the output for the input2021/6/715Th

6、e target of digital design Gates design Design basic device by transistors Functional design Design functional circuits by basic device combinational logic sequential logic2021/6/716The arrangement of the text Teach in 32 times:Arithmetic and device Char.1,2,3 7 Combinational circuit Char.4,5,6 12 Sequential circuit Char.7,8 12Memory 12021/6/717Exercise and Exams : 100 Exercis