LE2 Flashcards
What are the 6 combinational circuits?
Adder, Subtractor, Decoder, Encoder, Multiplexer, Demultiplexer
Combinational circuits have ____ and ____
no memory elements ; no feedback path
Half adder is the addition of ___
2 bits
Carry is the ____ significant bit and sum is the ___ significant bit.
higher ; lower
Full adder is the addition of ___
3 bits
This combinational circuit performs arithmetic operation of the input
Adder or Subtractor
This combinational circuit converts binary information from n input lines to a maximum of 2n unique output lines
Decoder
This combinational circuit is a digital circuit that performs the inverse operation of a decoder.
It converts binary information from 2n input lines to n output lines
Generally this produces 2-bit, 3-bit or 4-bit code.
Encoder
It is a combinational circuit that selects binary information from one of the input lines and directs it to a single output line
Multiplexer
Combinational circuit that receives information from a single line and directs it to one of 2n possible output lines
Demultiplexer
What are the 3-state gates?
High, low, high impedance
In 3-state gates, we may use conventional gates such as AND or NAND as tree-state gates but the most common is the ___.
three-state buffer gate
