EDGE Spartan 6 FPGA Development Board consist of 16 No. of slide switches and 4 digit seven segment display. Lets display the 4 bit BCD of slide switches in the 4 digit seven segment display. 4 Digit 7 Segment Display present on edge board is common anode display. All 4 digits can be enabled by … Read more
In this tutorial, We implemented 4 bit binary counter using EDGE Spartan 6 FPGA Kit. It counts at every 0.5 sec. We already designed 4 bit Binary counter for simulation which counts at input clock frequency (20 ns). As a result we can’t visually differentiate the counting sequence with on-board LEDs as it is counting … Read more
VHDL Code BCD to 7 Segment Display decoder can be implemented in 2 ways. By simplifying Boolean expression to implement structural design and behavioral design.
For constructing BCD to 7 segment display, first construct truth table and simplify them to Boolean expression using K Map and finally build the combinational circuit.
Mealy State Machine
The Output of the state machine depends on both present state and current input. When the input changes,the output of the state machine updated without waiting for change in clock input.
Moore State Machine
The Output of the State machine depends only on present state. The output of state machine are only updated at the clock edge.
Carry Select Adder VHDL Code can be Constructed by implementing 2 stage Ripple Carry Adder and multiplexer circuit. Carry Select Adder select the sum and carry output from stage 1 ripple carry adder when carry input ‘0’ and select Sum and carry output from stage 2 ripple carry adder, when carry input ‘1’.
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