Skip to main content

Digital techniques__excess-3 codes




Here we learn excess-3 code. Excess-3 code are obtained by adding 3 into given BCD number .
In this post we learn how to convert BCD number to excess-3 . it is very simple you have to add 3 into given BCD number . and second is how to convert excess-3 code into BCD. we have to subtract 3 from given excess-3 number. 

Comments

Post a Comment

Please do not enter spam in comment box

Popular posts from this blog

Digital techniques__4 Bit Adder and Subtractor

Post a Comment
Read more

Digital techniques_2marks questions

 Q.1) Attempt the following questions:- 10 Marks  (a) Draw the symbol and write the truth table of universal Gates. (b) In a 3 variable K’ Map if there are two quads, interpret the simplified output. (c) Define modulus of counter and write down the number of flips flops required to construct mod 7 counter (d) Construct OR gate using NOR gate. (e) Demonstrate with example the function of EQU directive.  (f) Find the number of address lines required for:  1. 2K RAM  2. 16K ROM
2 comments
Read more

Digital Techniques_Four Marks Questions

Question Bank 1) Define following terms related to logic families : (i) Noise Margin (ii) FAN-OUT (iii) Propagation delay (iv) Power dissipation 2) State Demorgan’s theorem’s and prove both theorems using truth table. 3) State functions of preset, clear, clock and SR inputs related to SR flip flop. 4) Sketch diagram of 4 bit asynchronous counter using suitable flip flop. Sketch timing diagram. 5) Perform binary subtraction using 2’s complement method (11001)2 – (1010)2. 6) State DeMorgan’s theorems and prove by Truth-table method for two variables. 7) Give the expression of Grey code equivalent of 4-bit binary using K-map. 8) Draw the circuit diagram of 3-bit asynchronous up/down counter using T-FF. 9) Describe any four specifications of DAC. 10) Perform the following: (11011)2 × (11011)2 11) State the rules for BCD Addition explain with example. 12) Design Half adder using K-map and implement using gates. 13) Subtract (1101)2 from (1110)2 using 1’s & 2’s complement method. 14) Des...
Post a Comment
Read more