When a customer wants a ROM programmed, they supply the manufacturer with a program, usually in the form of a truth table with addresses as the inputs, so that the manufacturer knows which connections to metalize between the decoder outputs and the OR gates. An example is shown below that uses a 1-hot decoder. A junction or dot shows a connection being made from a decoder output to the bus, which connects to the OR gate inputs. Can you verify that this circuit diagram would produce the truth table shown? Work through for your own understanding. Address (ABC) 000 001 010 011 100 101 110 111 Output (WXYZ) 0000 1010 0011 1100 0110 1011 1001 0111 YO Y₁ Y2 Y3 Y4 Y5 Y6 Y7 9898

When a customer wants a ROM programmed, they supply the manufacturer with a program, usually in the form of a truth table with addresses as the inputs, so that the manufacturer knows which connections to metalize between the decoder outputs and the OR gates. An example is shown below that uses a 1-hot decoder. A junction or dot shows a connection being made from a decoder output to the bus, which connects to the OR gate inputs. Can you verify that this circuit diagram would produce the truth table shown? Work through for your own understanding. Address (ABC) 000 001 010 011 100 101 110 111 Output (WXYZ) 0000 1010 0011 1100 0110 1011 1001 0111 YO Y₁ Y2 Y3 Y4 Y5 Y6 Y7 9898

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

3) The last two addresses 110 and 111 will have to correspond to blanks since you're only displaying a 6-
letter word. For this project, we will accept the ASCII code for underscore or SPACE to represent the
blank characters. Which option will be easier to implement? Explain.

When a customer wants a ROM programmed, they supply the manufacturer with a program, usually in
the form of a truth table with addresses as the inputs, so that the manufacturer knows which
connections to metalize between the decoder outputs and the OR gates. An example is shown below
that uses a 1-hot decoder. A junction or dot shows a connection being made from a decoder output to
the bus, which connects to the OR gate inputs. Can you verify that this circuit diagram would produce
the truth table shown? Work through for
your own understanding.
Address
(ABC)
000
001
010
011
100
101
110
111
Output
(WXYZ)
0000
1010
0011
1100
0110
1011
1001
0111
YO
Y1
Y2
Y3
Y4
Y5
Y6
Y7
gggg

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