(a) Draw the state transition diagram described by the VHDL of Figure Q4 The VHDL of Figure Q4 is part of a digital system used to confirm the validity of a personal identification number. cach...

I KEYPRESS=1then ICOUNT ICOUNT +1: ISUM c ISUM DATA PRESENT STATE e RELAX. elsif VERIFY-1 then PRESsENT STATEc= REPORT: else end if, when RELAX=> if KEYPRESS-1then PRESENT STATE RELAX: PRESENT STATE COUNT PRESENT STATE COUNT else end it when REPORT => if (ISUM-1 and ICOUNT-4) then CONFIRM c1 end if VERIFY=1' then PRESENT STATE REPORT else PRESENT STATE

PRESENT STATE <= count="" confirm="" c="" 0="" end="" case:="" end="" it="" end="" process;="" end="" behavior,="" figure="" q4="" "/="">
Extracted text: (a) Draw the state transition diagram described by the VHDL of Figure Q4 The VHDL of Figure Q4 is part of a digital system used to confirm the validity of a personal identification number. cach keypress rasing the KEYPRESS signal and placing the value of the key pressed on DATA. State the properties of a legal personal identification number. (b) architecture behavior of confinrm is type state is (COUNT, RELAX, REPORT) signal PRESENT STATE: state; sgnal ISUM: UNSIGNED (3 downto 0) 0000 variable ICOUNT: UNSIGNED (3 cownto O 00:0:% begin process (CLK, RESET) begin it RESET-0 then PRESENT STATE <= count,="" confirm=""><=0 eisit="" (clk'event="" and="" clk='1n then CONFIRM c0" case state is when COUNT > I KEYPRESS=1then ICOUNT ICOUNT +1: ISUM c ISUM DATA PRESENT STATE e RELAX. elsif VERIFY-1 then PRESsENT STATEc= REPORT: else end if, when RELAX=> if KEYPRESS-1then PRESENT STATE RELAX: PRESENT STATE COUNT PRESENT STATE COUNT else end it when REPORT => if (ISUM-1 and ICOUNT-4) then CONFIRM c1 end if VERIFY=1' then="" present="" state="" report="" else="" present="">

PRESENT STATE <= count="" confirm="" c="" 0="" end="" case:="" end="" it="" end="" process;="" end="" behavior,="" figure="">