In lab this week you wrote code that simulates a simple computer; that code could be turned into a circuit. Assume that we have set up the following: • an 8-bit pc register, with 8-bit input pc_in and 8-bit output pc_out. • memory returns the instruction on the 8-bit output code_byte. Your code used a get_bits function we provided to retrieve a 2-bit part of the instruction (code_byte) as the index into the register file for register A. In a physical chip, the simplest correct form of the 2-bit extraction would be to: needed (no gates) O A. Connect 2 of the 8 wires that make up the code_byte to the register file a OB. A right-shift circuit to move the 2 bits for A to the least significant bits and use those two wires OC. A mux with 8 bits of the code_byte as inputs and the 2 bits we want as the selector OD. An even larger circuit than the ones above

In lab this week you wrote code that simulates a simple computer; that code could be turned into a circuit. Assume that we have set up the following: • an 8-bit pc register, with 8-bit input pc_in and 8-bit output pc_out. • memory returns the instruction on the 8-bit output code_byte. Your code used a get_bits function we provided to retrieve a 2-bit part of the instruction (code_byte) as the index into the register file for register A. In a physical chip, the simplest correct form of the 2-bit extraction would be to: needed (no gates) O A. Connect 2 of the 8 wires that make up the code_byte to the register file a OB. A right-shift circuit to move the 2 bits for A to the least significant bits and use those two wires OC. A mux with 8 bits of the code_byte as inputs and the 2 bits we want as the selector OD. An even larger circuit than the ones above

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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Concept explainers

Computer Fundamentals

The computer is termed computation. For calculating or computing something the device that has been used is known as the computer. Or we can say that for performing a fast arithmetic operation the device that has been used is a computer. Storing, processing, and retrieving are the main features of a computer. 

Question

In lab this week you wrote code that simulates a simple computer; that code could be turned into a circuit.
Assume that we have set up the following:
• an 8-bit pc register, with 8-bit input pc_in and 8-bit output pc_out.
• memory returns the instruction on the 8-bit output code_byte.
Your code used a get_bits function we provided to retrieve a 2-bit part of the instruction (code_byte) as the index into the register file for register A. In a physical chip, the
simplest correct form of the 2-bit extraction would be to:
A. Connect 2 of the 8 wires that make up the code_byte to the register file as needed (no gates)
B. A right-shift circuit to move the 2 bits for A to the least significant bits and use those two wires
C. A mux with 8 bits of the code_byte as inputs and the 2 bits we want as the selector
D. An even larger circuit than the ones above

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