logic gates

• computer - simple collection of digital switches, buildup of integrated circuits, circuit in computer is made up of combination of combinational and sequential logic
• integrated circuit - made up of transistor, resistor, capacitor and other electronic components
• primary components of ICs (integrated circuit) - transistor
• transistor - use to handle number 0 and 1, handle basic boolean algebra for computer
• types of logic circuit - combinatorial logic and sequential logic
• combinational logic - depend only on the presents inputs to the operation, uses: perform arithmetic, compare values for decision making
• sequential logic - depend on both the inputs and the result of previous operations, use gate to provide memory, uses: counter
• boolean algebra - rules that can govern constants and variable that can take on two values
• boolean logic - rules for handling boolean constants and variables, 3 fundamental operations AND, OR, NOT
• truth table - specifies result for all possible input
• series symbols for logic gates - traditional, IEC
• traditional symbols - widely use in industry and education
• IEC (international electrotechnical commission) - symbols are rectangle