Logic Lab
Registers
4-bit register, parallel load, shift register and serial transfer between registers.
4-bit register
Parallel inputs
I3
I2
I1
I0
Register
0
Q30
Q20
Q10
Q0CLK
Q3
Q2
Q1
Q0
Built from flip-flops
Four D flip-flops on one clock. Every rising edge copies the four inputs into the register, and the value is held until the next edge.