In this problem, you will design a circuit that encrypts (plaintext to cipher) and decrypts (cipher to plaintext) **ASCII characters**. The relationship between the plaintext character and cipher character is shown in the table below:| plaintext character | cipher character ||---------------------|------------------|| A-O | 1-? || P-Z | t-~ || space | 0 |In this table, the "0" and "1" refer to the characters “0” and “1”, not the numerical values. Additionally, the circuit only needs to account for characters listed in the table. The circuit has nine bits of input:- $ d = d_7 \ldots d_0 $: an eight-bit number that is the binary representation of the input ASCII character- $ e $: a single bit indicating if the circuit should encrypt ($ e = 1 $) or decrypt ($ e = 0 $) the given characterThe circuit has eight bits of output:- $ r = r_7 \ldots r_0 $: an eight-bit number that is the binary representation of the output ASCII characterDraw the implementation of the circuit. The circuit does not have to be transistor-minimal; you are encouraged to use various combinational circuitry to implement the circuit.

In this problem, we are tasked with the design of a digital circuit that serves as an ASCII…

this problem, you will design a circuit that encrypts (plaintext to cipher) and decrypts (cipher to intext) ASCII characters. The relationship between the plaintext character and cipher character is own in the table below: plaintext character cipher character 1-? t-~ 0 A-O P-Z space this table, the "0" and "1" refer to the characters "0" and "1", not the numerical values. Additionally, e circuit only needs to account for character listed in the table. The circuit has nine bits of input: ● d = d7... do: an eight-bit number that is the binary representation of the input ASCII character 2: a single bit indicating if the circuit should encrypt (e- 1) or decrypt (e - 0) the given character

this problem, you will design a circuit that encrypts (plaintext to cipher) and decrypts (cipher to intext) ASCII characters. The relationship between the plaintext character and cipher character is own in the table below: plaintext character cipher character 1-? t-~ 0 A-O P-Z space this table, the "0" and "1" refer to the characters "0" and "1", not the numerical values. Additionally, e circuit only needs to account for character listed in the table. The circuit has nine bits of input: ● d = d7... do: an eight-bit number that is the binary representation of the input ASCII character 2: a single bit indicating if the circuit should encrypt (e- 1) or decrypt (e - 0) the given character

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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Question

In this problem, you will design a circuit that encrypts (plaintext to cipher) and decrypts (cipher to plaintext) **ASCII characters**. The relationship between the plaintext character and cipher character is shown in the table below:

| plaintext character | cipher character |
|---------------------|------------------|
| A-O | 1-? |
| P-Z | t-~ |
| space | 0 |

In this table, the "0" and "1" refer to the characters “0” and “1”, not the numerical values. Additionally, the circuit only needs to account for characters listed in the table. The circuit has nine bits of input:

- $ d = d_7 \ldots d_0 $: an eight-bit number that is the binary representation of the input ASCII character
- $ e $: a single bit indicating if the circuit should encrypt ($ e = 1 $) or decrypt ($ e = 0 $) the given character

The circuit has eight bits of output:

- $ r = r_7 \ldots r_0 $: an eight-bit number that is the binary representation of the output ASCII character

Draw the implementation of the circuit. The circuit does not have to be transistor-minimal; you are encouraged to use various combinational circuitry to implement the circuit.

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