
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Need 2 different variations answers and with explanation please. Thank you.

Transcribed Image Text:PART 4: Using the custom circuits you built in Parts 1-3, built a 4 bit 2's Complement multiplier that uses
the inversion method discussed in class.
HINTS: INVERSION METHOD:
1) If input A is negative, invert it. If input A is positive, leave it alone.
2) If input B is negative, invert it. If input B is positive, leave it alone.
3) Multiply A and B.
4) If both A and B originally had the same sign (both positive or both negative), do nothing.
5) If A and B originally had different signs (one was positive, the other negative), invert the product.

Transcribed Image Text:4 bit 2's Complement Multiplier
INPUT A: 4 bit 2's Complement number
INPUT B: 4 bit 2's Complement number
OUTPUT: the product of A x B represented as a 8 bit 2's Complement number
You are only allowed to use the basic gates: NOT, AND, OR, XOR. You may however, use these basic gates
to build your own custom circuits (i.e. Adder). You are NOT ALLOWED to use Logisim built in circuits.
Each custom circuit is to be implemented as a sub-circuit.
PART 1: Build a 4 bit controlled 2's Complement Inverter
PART 2: Build a 8 bit controlled 2's Complement Inverter
PART 3: Build a 4 Bit UNSIGNED Multiplier
A: 4 Bit Input
B: 4 Bit Input
Multiplier
0000 000O
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