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learn:programmable-logic:tutorials:use-flip-flops-to-build-a-clock-divider:start [2017/10/24 21:27] – Arthur Brownlearn:programmable-logic:tutorials:use-flip-flops-to-build-a-clock-divider:start [2023/04/18 16:06] (current) – [Prerequisites] Martha
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-<a href="https://reference.digilentinc.com/learn/fundamentals/circuits/memory-circuits/start" class="btn btn-success" role="button">Memory Circuits</a>+<a href="/learn/fundamentals/circuits/memory-circuits/start" class="btn btn-success" role="button">Memory Circuits</a>
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 ===== Prerequisites ==== ===== Prerequisites ====
   * Have the Xilinx ISE WebPACK installed.    * Have the Xilinx ISE WebPACK installed. 
-  * Set up your FPGA board.+  * Set up your [[https://digilent.com/shop/boards-and-components/system-boards/fpga-boards/|FPGA board]].
   * Be able to describe a digital circuit using logic operators.   * Be able to describe a digital circuit using logic operators.
   * Be able to write test bench and simulate circuits using ISim.   * Be able to write test bench and simulate circuits using ISim.
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 ==== Software ==== ==== Software ====
   * <wrap todo>Xilinx ISE WebPACK</wrap>.   * <wrap todo>Xilinx ISE WebPACK</wrap>.
-  * [[reference/software/adept/start]]+  * [[software:adept:start]]
  
 ==== Hardware ==== ==== Hardware ====
-  * Xilinx ISE compatible board such as [[[[reference/programmable-logic/nexys-4/start]], [[[[reference/programmable-logic/nexys-3/start]], [[reference/programmable-logic/nexys-2/start]], [[reference/programmable-logic/basys-3/start]], or [[reference/programmable-logic/basys-2/start]]+  * Xilinx ISE compatible board such as [[programmable-logic:nexys-4:start]], [[programmable-logic:nexys-3:start]], [[programmable-logic:nexys-2:start]], [[programmable-logic:basys-3:start]], or [[programmable-logic:basys-2:start]]
  
  
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-<a href="https://reference.digilentinc.com/learn/fundamentals/digital-logic/flip-flops/start" class="btn btn-success" role="button">D Flip-flop (DFF)</a>+<a href="/learn/fundamentals/digital-logic/flip-flops/start" class="btn btn-success" role="button">D Flip-flop (DFF)</a>
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   - Can you add two switches to control how fast the LED blinks: Say, if switch[1:0] is 0, LED blink frequency is 0.745 Hz; if switch[1:0] is 1, LED blink frequency is 1.49 Hz; if switch[1:0] is 2, LED blink frequency is 2.98 Hz; if switch[1:0] is 3, LED blink frequency is 5.96 Hz.   - Can you add two switches to control how fast the LED blinks: Say, if switch[1:0] is 0, LED blink frequency is 0.745 Hz; if switch[1:0] is 1, LED blink frequency is 1.49 Hz; if switch[1:0] is 2, LED blink frequency is 2.98 Hz; if switch[1:0] is 3, LED blink frequency is 5.96 Hz.
  
-{{tag>learn programmable-logic project nexys-4 nexys-3 nexys-2 basys-3 basys-2 flip-flops clock divider}}+{{tag>learn programmable-logic project nexys-4 nexys-3 nexys-2 basys-2 flip-flops clock divider}}