We can control RS Latch with clock by ANDing both inputs with clock separately as: Hence when we have CLK (OR E) = 1, R & S gets passed to the RS latch circuit and hence the output is affected by the inputs only when CLK (OR E) = 1 and when CLK (OR E)=0, […]
We can also represent the above circuit using NAND gates as: Let’s convert to NAND circuit step by step. R’S’ FLIPFLOP The characteristics of the FF are as given in table: Now we replace R by R (bar) and S by S (bar) and eliminating the 2 circles and hence final circuit.
When R=0, S=0 we don’t have a change in the output in the circuit. When R=0, S=1 we have output as Q=1 and Q bar = 0 When R=1, S=0 we have the output as Q=0 and Q bar = 1 But when we have R=1, S=1, both R and S make outputs of their […]
DERIVING THE CIRCUIT OF FLIPFLOP (from digital components): To understand the logic let’s consider a basic circuit of an inverter with a feedback as below: Now what would be the output of the circuit? We know what ever is at input, we’ll get inverse of that at output and as output is fed back to input […]
FLIP-FLOP is another name of Bi-stable Multi-vibrator. A flip-flop is the basic element of sequential circuit. It has the capability of storing 1 bit. The circuit of the Bi-stable Multi- vibrator using transistors is as follow: The two transistors are used to store a single bit and they can hold data without external assistance as far as power is […]
A clock signal is defined by clock period or clock frequency. The clock period is defined as time interval after which clock repeats it self or we can define it as time gap between two consecutive falling edges or two consecutive rising edges and clock frequency is defined as number of clock pulses in a second. Clock […]
In Sequential circuits output is a function of present inputs and pat output. These circuits have a feedback element or memory element which stores the output of the circuit and makes it available at the input. The following is the general diagram of sequential circuits: The binary information stored in the memory element that is […]