Design a password protected door lock system

Why does the computer fan create such a piercingly loud noise even when it has only been used once and is being charged?

Please written by computer source Create a vending machine controller in Verilog(using Xilinx vivado) and create a testbench to validate its operation. The controller will have three inputs. Each of these three inputs will indicate to the controller what coins are being inserted (name them: quarterin, dimein, nicklein). One input will signal that a quarter was inserted by toggling from the default “low” state to high (active high) for a duration of one clock cycle. The other two inputs will do the same but for dimes and nickels. The vending machine controller will also have three additional inputs that are used to indicate the beverage selected by the user (name them: indrink1, indrink2, indrink3). These inputs will be active high for a duration of one clock cycle. The beverage costs will be $1.00, $1.10, and $1.20 for drink1, drink2, and drink3 respectively. The vending machine controller must have three outputs to indicate to the change dispenser how much change it needs to provide.…

Describe the various methods of mouse control in the context of computer systems.

Explain your process for creating a control unit using vertical coding?

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