I just record the things I think important here.

1.1 Decimal - Binary

1.2 Number Conversion

1.3 Hexadecimal Number

1.4 Unit

1.5 Logic Gates

2.1 Some Definitions

2.2 Get the SOP equation from truth table

2.3 Boolean Algebra

2.4 Decoder

2.5 Multiplexer (Mux)

2.6 Shifter

2.7 Bistable Circuit

2.8 SR(Set/Reset) Latch

2.9 D latch

3.1 Adder

3.2 Arithmetic Logic Unit (ALU)

3.3 Counters

3.4 Shift Register