Arithmetic Logic Device

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29.08.2019-486 views -Arithmetic Logic Unit

 Arithmetic Logic Unit Composition

MATH LOGIC UNIT

Submitted Simply by,

M. GOVINDHASAMY.

T. GOWTHAM. T. A. GOWTHAMRAJ.

ARITHMETIC LOGIC UNIT

AIM:

To confirm the Function table of 4 tad ALU.

DEVICE REQUIRED:

IC 74181.

* Trainer kit(+5v).

2. Connecting probes.

PROCEDURE:

* Contacts are made since shown in the Circuit diagram.

* Change the values of the inputs and verify for least a few functions 2. given in the function stand.

PIN DETAILS & FUNCTION TABLE: --

IC 74181

EXAMPLES:

REAL TRUTH TABLE1:

Kit input| Chip input

A| B| A| B

0| 0| 1| 1

0| 1| 1| 0

1| 0| 0| 1

1| 1| 0| 0

Choose lines 0 0 0 0 в†’ A

EQU1: A. A=A

A→0→0→1

Choose lines zero 0 0 1 в†’ AB

EQU2: AB→A+B→A+B

0+0=0=1

0+1=1=0

1+0=1=0

1+1=1=0

Select lines 0 one particular 0 zero в†’ AвЉ•B

EQU3: A⊕B → A. B+A. B→A. B+A. W

0. 0+1. 1=1=0 0. 1+1. 0=0=1 1 . 0+0. 1=0=1 1 . 1+0. 0=1=0 CARRY=LOW MODE=HIGH

TRUTH TABLE2:

Package input| Chip input

A| B| A| B

0| 0| 1| 1

0| 1| 1| 0

1| 0| 0| 1

1| 1| 0| 0

Select lines 0 0 0 0 в†’ A

EQU1:

A→1→1→0

Select lines 0 one particular 0 0 в†’ AB

EQU2: AB→A+B

1+1=1

1+0=1

0+1=1

0+0=0

FACT TABLE3:

Choose lines 0 1 0 0 в†’ AвЉ•B

EQU3: A⊕B → A. B+A. B→A. B+A. B

0. 0+1. 1=1=0 zero. 1+1. 0=0=1 1 . 0+0. 1=0=1 1 ) 1+0. 0=1=0

CARRY=HIGH MODE=HIGH

TRUTH STAND 1:

FACT TABLE two:

BLOCK PLAN:

FEATURES:

5. Full bring look-ahead pertaining to high-speed math operation on long phrases. * Delivers 16 math operations: add, subtract, review, double, additionally 12 others. * Gives all of sixteen logic operations of two variables: EXCLUSIVE-OR, compare, AND, NAND, NEITHER, OR additionally 10 additional logic businesses. * End result capability: standard, A=B available drain.

OPERATING PRINCIPLE:

The 74HC/HCT181 are high-speed Si-gate CMOS devices and are also pin suitable for low electricity Schottky TTL (LSTTL). They can be specified in compliance with JEDEC normal no . 7A. The 74HC/HCT181 are 4-bit high-speed seite an seite Arithmetic Logic Units (ALU). Controlled by the several function choose inputs (S0 to S3) and the setting control insight (M), they will perform all of the 16 conceivable logic procedures or 16 different arithmetic operations about active SUBSTANTIAL or effective LOW operands (see function table). If the mode control input (M) is EXCESSIVE, all inside carries are inhibited and the device3 executes logic businesses on the specific bits as listed. Once M is LOW, the carries will be enabled plus the " 181” performs math operations within the two 4-bit words. The " 181” incorporates...

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