How many 3 to 8 decoder do you need if you are going to design a 6 to 64 decoder?
9
How many 3-to-8 line decoders with an enable input are needed to construct a 6-to-64 line decoder without using any other logic gates? hence required decoders (from fig.) = 9 so ans is ( C) part.
What is a decoder truth table?
A decoder is a circuit which has n inputs and 2n outputs, and outputs 1 on the wire corresponding to the binary number represented by the inputs. For example, a 2-4 decoder might be drawn like this: and its truth table (again, really four truth tables, one for each output) is: i1. i0.
What is line decoder?
Decoder is a combinational circuit that has ‘n’ input lines and maximum of 2n output lines. One of these outputs will be active High based on the combination of inputs present, when the decoder is enabled.
How many 3 line to 8 line decoders are required for a 4 to 16 decoder assume that one inverter is also available?
4 to 16 decoder circuit is obtained from two 3 to 8 decoder circuits or three 2 to 4 decoder circuits. When two 3 to 8 Decoder circuits are combined the enable pin acts as the input for both the decoders.
How many 3 to 8 line decoders are needed to construct a 7 to 128 line decoder without using any other logic gates?
We have 3:8 decode with 8 o/p. So, we need 64/8=8 decoders.
What is the minimum number of 3 lines to 8 line decoders are required for a 5 of 32 decoder?
four 3
We need one 2 to 4 decoder and four 3 to 8 decoders to implement 5 to 32 decoder.
What is a line decoder?
What is 2×4 decoder?
The 2-to-4 line binary decoder depicted above consists of an array of four AND gates. The 2 binary inputs labelled A and B are decoded into one of 4 outputs, hence the description of 2-to-4 binary decoder. Each output represents one of the minterms of the 2 input variables, (each output = a minterm).
How many 3 lines are there in an 8 line decoder?
The 3-input data lines used as common lines for the 4-decoder of 8-out puts. Thus, one could have a total of 4*8=32 out puts. Hence one needs 4 a 3-line-to-8-line decoders.
How many 3 of 8 decoders are required along with required additional logic gates to design a 5 to 32 decoder mention the count of required 3 to 8 decoders for the same?
In 3 * 8 Decoder we have 3 input lines and 8 output lines and will just select one output line based on various input combinations. Altogether 5 3 to 8 decoders are required to produce 32 output lines of 5 to 32 decoders.
How many 3-line-to-8-line decoders are required for a 4 to 16 decoder assume that one inverter is also available?
How many lines will a 8 input decoder have?
So, a two-to-four decoder will have two input lines and four output lines, while a three-to-eight decoder will have three input lines and eight output lines.
What is the truth table of 2 to 4 decoder?
Here is the truth table of 2 to 4 decoder. Y3 = E. A1. A0 Y2 = E. A1. A0′ Y1 = E. A1′. A0 Y0 = E. A1′. A0′ Every output of this decoder includes one product term. So the four product terms can be implemented through 4 AND gates where each gate includes 3 inputs as well as 2 inverters. The 2 to 4 decoder logic diagram is shown below.
What is a 3 to 8 line decoder?
On the contrary, the decoder is a combinational circuit that can accept many inputs and generate the decoded output. Problem: 3 to 8 line decoder. The number of available inputs are 3 and outputs are 8. Let us represent the inputs and outputs by symbol letters. Let us represent the inputs by x, y, and z; and the outputs by D 0, D 1, D 2, …
What is a 3-bit to 8-bit decoder?
This kind of decoder mainly used to decode any 3-bit code & generates eight outputs, equivalent to 8 different combinations for the input code. This decoder is also known as a binary to octal decoder because the inputs of this decoder represent three-bit binary numbers whereas the outputs represent the 8 digits within the octal number system.
How many output lines does a decoder have?
Some decoders have less than 2n output lines; in such cases, at least one output pattern may be repeated for different input values. Why do we need a Decoder? A decoder is a circuit that changes a code into a set of signals.