4-bit digital comparator by using simple gates

Q. A straight binary sequence is applied to a 4-bit DAC, and the output in figure below is observed. What is the problem? Output 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0000 1000 0010 0011 0010 -1010 0110 1110 0001 1001- -otor 1011 H0011 1101- 0111 1111 Binary input Electrical Engineering Department/ University of Baura

Convert decimal to binary using an 8-bit 2’s complement representation: -64

Design a 4-bit 4x1 multiplexer using four 4x1 multiplexers please do not write other examples on the internet remember that the correct answer should have 1 output and only 4 inputs!

4-25. Design a combinational circuit to check for even parity of four bits. A logic-1 output is required when the four bits do not constitute an even parity.

2. An A-to-D converter must cover a range from -24V to +24V, with a quantization resolution of 20 mV or better. (a) How many levels are needed to get this resolution? (b) How many binary bits are needed to code these levels?