Logic Diagram Encoder. As shown in the following figure an octal to binary encoder. 2 encoder the 4 to 2 encoder consists of four inputs y3 y2 y1 y0 and two outputs a1 a0.
These or gates encode the four inputs with two bits. In the below diagram given input represented as i1 and i0 all possible outputs named as o0 o1 o2 o3 and a e were represented by enable input. A1 y3 y2 a0 y3 y1 the above two boolean functions a1 and a0 can be implemented using two input or gates.
A circuit diagram of this encoder is shown below.
74f148 8 line to 3 line priority encoder 74f148 8 line to 3 line priority encoder general description the f148 provides three bits of binary coded output repre senting the position of the highest order active input along with an output indicating the presence of any active input. Logic symbol and truth table of 4 to 2 encoder. The truth table of 4 to 2 encoder is as follows. Each input line corresponds.