1. Master the basic knowledge of logical algebra:

(1) Basic logical operations and symbolic representations, basic formulas, commonly used formulas and basic rules.

(2) Several representations of logical functions, including expressions, truth tables, Karnaugh maps, logic maps and timing charts. (3) the mutual transformation between these representations of logical functions.

(4) Standard sum or formula of function, minimum term and simplest formula of function.

(5) Simplify the function with formula method, Karnaugh map and constrained function.

2. The gate circuit focuses on:

(1)TTL NAND gate circuit, including transmission characteristics, input characteristics, input load characteristics, output characteristics, fan-out coefficient, input noise tolerance, average transmission time and static power consumption.

(2) Calculation of pull-up resistance when (2)OC gate is connected and the output voltage needs to be changed.

(3) The application of tri-state gate and transmission gate in interface circuit.

(4) Fan-out coefficient, input noise tolerance, average transmission time and static power consumption of CMOS gate.

3. The combinational logic circuit mainly grasps:

(1) Several common coding systems, including original code, complement and complement, BCD842 1 code, BCD542 1 code, BCD242 1 code, the remaining three codes and cyclic codes.

(2) Analysis and design methods of combinational circuits.

(3) Analysis of full adder and application of integrated full adder 74LS283.

(4) The analysis of min-term decoder integrates the applications of min-term decoders 74LS 138 and 74LS 139.

(5) Data selector analysis, integrating the application of one-eighth data selector 74LS 15 1 and one-quarter data selector 74LS 153.

(6) Analysis of display decoder and application of integrated display decoders 74LS47 and 74LS48.

(7) The analysis of encoder and the application of integrated priority encoder 74LS 148.

(8) Analysis of digital comparator and application of integrated digital comparator 74LS85.

(9) Analyze the actual logic problems and abstract the logic, and finally design the logic circuit to realize this function with basic gate circuits or common integrated chips.

4. The trigger focuses on:

(1) Functions, characteristic equations, constraints and applications of basic RS flip-flops and synchronous RS flip-flops.

The functions, characteristic equations, timing diagrams, dynamic characteristics and applications of edge JK, D, T and T' flip-flops.

5. The sequential logic circuit focuses on:

(1) Analysis method of sequential circuits, analysis of synchronous binary addition and subtraction counters and asynchronous binary addition and subtraction counters.

(2) The design method of synchronous sequential circuits with or without input variables, the principle of equivalent state merging and state coding.

(3) The method of integrating counters 74LS 160/ 162 and 74LS161163 synchronously to form an arbitrary decimal counter (reset method, set number method) and its application in digital system.

(4) The method of asynchronous integration of counter 74LS290/93 (reset method) and its application in digital system.

(5) Analyze the actual sequential logic problem and abstract the logic, select the type and number of flip-flops, and design the sequential circuit to realize this function.

6. The pulse signal generation and shaping circuit mainly focuses on:

(1)555 timing circuit function.

(2) Hysteresis characteristics, transmission characteristics and input and output voltage waveforms of Schmitt trigger composed of 555 timing circuit.

(3) Calculate the transient time, capacitor voltage, input and output voltage waveforms of the monostable trigger composed of 555 timing circuit.

(4) Calculate the oscillation period and frequency by using the capacitor voltage and output voltage waveform of the multivibrator composed of 555 timing circuit.

7.A/D and D/A conversion circuits should focus on:

(1) inverted T-shaped resistance network D/A converter, and calculate the D/A conversion voltage.

(2) Successive approximation A/D converter, which approximates the given analog voltage step by step to obtain the corresponding digital quantity.

(3) Compare the conversion principles of parallel comparison A/D converter and double integral A/D converter.

(4) Compare the accuracy and speed of parallel comparison A/D converter, successive approximation A/D converter and double integral A/D converter.

(5) Application of typical A/D and D/A converters, such as AD7524 and ADC0809.

8. Focus on memory:

The address lines and bit lines of (1)ROM and RAM are represented by dot matrix, and logic functions are realized accordingly.

Simple applications of ROM and RAM, such as integrated read-only memories EPROM27 16 and 2764.

The textbook is: