13) Using 7-bit ASCII coding, encode the textual message "Me" into a sequence of binary bits followed by an eighth bit for error detection. The eighth bit is added so that the number of ones in the 8 bits is an even number. a. scheme, how many bits will be represented by each pulse? Using a a 16-ary modulation

13) Using 7-bit ASCII coding, encode the textual message "Me" into a sequence of binary bits followed by an eighth bit for error detection. The eighth bit is added so that the number of ones in the 8 bits is an even number. a. scheme, how many bits will be represented by each pulse? Using a a 16-ary modulation

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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1.) Derive the even-parity Hamming code that corresponds to the following data bits. Be sure to show your work and illustrate how each parity bit was determined. Ob10111000101110
3. a Design a (7, 4) CRC code word for the data bits 1011 assuming the generatorpolynomial of 1011. b. Calculate the syndrome for the received code word 1000110 using the generatorpolynomial 1011.
2. (a) What is a single error and burst error? Explain with an example. (b) Find the Hamming code of the following bitstream using even parity. 11011111010111010101110111000010
2) Design the 2-bit multiplier using the truth table and four 4-variable K-maps. Obtain the standard sum-of-products expression for each output.
b) (i)Is it possible to design a 3-bit binary code to represent each of the 7 digits of the base-7 number system that is also self-complementing? How, if it is possible, and why not, if it is not possible? (ii)Is it possible to design a 3-bit binary code to represent each of the 8 digits of the base-8 number system that is also self-complementing? How, if it is possible, and why not, if it is not possible? [Remember: a code is self-complementing when the complementary digits in base 7 encode into complementary triplets in the 3-bit representation; for instance BCD is not self-complementing, for 0 and 9 are complementing, but 0000 and 1001 are not; the 2421 code is self-complementing]
Quick solution required.
(b) Convert the following hexadecimal numbers to binary: (i) 111111 (ii) 101 (c) How many bits are needed to represent the order of an entire deck of playing cards? 4. Express the following number as 32-Bit single precision floating point numbers; using 1 signed bit, 8 biased exponent bits (+127), 23 bits for magnitude with the MSB dropped. (a) The speed of light, c, 0.2998 x 10^9 5. Explain the functionality of the following VHDL program. entity BCDInv is port (B,C,A: in bit; X: out bit); end entity BCDInv architecture Invalid of BCDInv begin X <= (B or C) and A; end architecture Invalid;
(a) S-AES is the simplified version of AES that has two rounds, make use of 16 bit key and 16 bit plaintext. Consider the following key: 1110011000101011 01010010 01001110 Now for the plaintext,
Problem_#03] If the output is a "1" for the decoders shown below, Find the input given that A3 is the MSB. Ag Ao A1 A1 A2 A2 (a) (b) A1 Ap A1 A2 Az A3
2:35 79% Consider the 1-bit ALU, shown below: Ainvert Operation Binvert Caryin Caryout Write down the values of ALU control bits (Ainvert, Binvert, Operation) that make this 1-bit ALU perform the following operations: a) AND b) OR c) NOR d) Addition
4) Give the 2s complement a. 28 00011100 b. -53 d. -1 for each value (each value is in decimal format) (use 8 bits) c. 78 e. -29 f. -122
Question 1 a) A 9-bit binary number is used to represent an analog value in the range from 120 ounces to 600 ounces, determine the resolution of the system and interprete your result.