Using Vivado, write VHDL code for the implementation of a sequence detector in VHDL using push

buttons. Four push buttons should be used for entering symbols $(1,2,3,4).$ Further, the push

button in the middle should be used for initialisation.

$$ Up to $10$ symbols could be entered after pressing the initialisation push button. When the

sequence $43123$ is entered, then the LEDs should start flashing. Please note that the right

sequence of symbols need not necessarily be entered immediately after the initialisation push

button is pressed. For example, the sequence $2412343123$ should be able to activate the

flashing of the LEDs.

$$ If $10$ symbols have been entered but the right sequence of symbols has not appeared yet, then

the system should lock and the LEDs should show the following predefined pattern: on$,$ off, on$,$

off, on$,$ off, on$,$ off, on$,$ off, on$,$ off.

$$ If the system is locked, the user will need to press the initialisation button in order to be allowed

to start entering new symbols.