digital design

I'm doing a Finite state machine of a elevator using verilog. The elevator contain four states: IDLE, MOVING, ERROR, ALERT * IDLE: When the elevator is stopped. * ERROR: When the elevator's weigth limit is exceeded. * MOVING: When the elevador leaves the current floor and start moving across...

Hi i want to simulate 0-99 Counter with J-K Flip Flop 74LS107A on proteus and i have finished it but it is not working i mean the 7-segment not working can one help me with it? i will post the picture of the project... thnx :)

Verilog : It's supposed to be a MOD10 counter but it counts from 0 to 9 and resets to 4, why?? Please give me the solution as a code and explaination for it if possible. module MOD10 (clk, clr, q); input clk, clr; output [3:0] q; wire x, w; assign x = q[3] & q[1]; //...

Hi, I have 17 LED strips, and a 20A, 5V PSU. It has 3 terminals for COM, and 3 for V+. I have run 4 sets of automotive power cable, so my strips are powered by different cable runs. 3 of the cables power 4 LED strips, and 1 powers 5, for a total of 17 LED strips. For simplicity, my diagram...

I want to construct a circuit that calculates the absolute value of a signed 4-bit number in two's complement! So the logic here : assuming we have B = b3 b2 b1 b0 . If b3 is '1' then then b is already in 2s complemnt and should be assigned directly to the output else if b3 is equal to '0' then...

I need to design an Automated system such that a user gives inputs in 3 bits and there's a clock running that resets itself and gives a positive signal after the time indicated by input. We can use logic gates, combinatorial circuits, sequential circuits, counters, registers.

So i'm having trouble on a Digital Design assignment. I'm supposed to create a circuit in logisim that checks whether a BCD number is a palindrome or not. This is easy enough when the length of the number is given but apparently I'm supposed to do this without knowing the length of the number...