4 BIT BINARY UP / DOWN COUNTER (Behavioral)

4 BIT BINARY DOWN COUNTER (Behavioral)

4 BIT BINARY-UP-COUNTER (Behavioral)

BCD to EXCESS THREE CODE CONVERTER (Dataflow)

FULL ADDER / FULL SUBTRACTOR USING MODE CONTROL

JOHNSON COUNTER (4-Bit)- (Behavioral)

RING COUNTER (4-Bit) -(Behavioral)

T_FLIP-FLOP ( Behavioral )

JK_FLIP-FLOP (Behavioral)

D_FLIP-FLOP ( Behavioral )

3-BIT BINARY to EXCESS THREE CODE CONVERTER (Dataflow)

GREY to BINARY CODE CONVERTERS-(Dataflow)

BINARY to GREY CODE CONVERTERS-(Dataflow)

FULL SUBTRACTOR-(Behavioral)

HALF-SUBTRACTOR-(Behavioral)

RAM

RAM

RIPPLE CARRY ADDER (Structural)

CARRY LOOK AHEAD ADDER Behavioral Model (VHDL)

PARALLEL-IN PARALLEL-OUT SHIFT REGISTER

PARALLEL -IN SERIAL-OUT SHIFT REGISTER

SERIAL-IN PARALLELL-OUT SHIFT REGISTER

SERIAL-IN SERIAL-OUT SHIFT REGISTER

DECODER

1 BIT COMPARATOR

Multiplexer

NAND Gate

XNOR Gate

NOR Gate

2-BIT-COMPARATOR

NOT Gate

OR Gate

AND Gate

XOR Gate

FULL ADDER

HALF ADDER

Procedure for Vhdl Stimulation in Xilinx

INTRODUCTION TO VHDL