Section 8: Boolean algebra Flashcards
What is a half adder?
A half adder can take an input of two bits and give a two-bit output as the result of an addition of the two bits.
What is a full adder?
A full adder combines two half adders to add 3 bits together: input A, input B and carry bit C.
What is a concatenated adder?
A concatenated adder is a concatenation of multiple full adders in order to allow the addition of multiple-bit binary numbers.
What is a flip flop?
A flip flop is an elemental sequential logic circuit that can flip between two states, 0 and 1. It has two inputs, a control input labelled D and the clock signal.
What is the job of a clock signal in a D-type flip flop?
The job of a clock signal in a D-type flip flop is to synchronise the change of state of flip flop circuits. Since the D-type flip flop is an edge-triggered flip-flop, the output value can only change when the clock is at a rising or positive edge.
Why is the flip-flop circuit important in a D-type flip flop?
The flip-flop circuit is important because it can be used as a memory cell to store the state of a bit.
