In addition to the decimal number system, the number systems used most often in PLC operationand programming are .

PLC uses:

1. Decimal Number system

2. Binary Number system.

3. Octal Number system.

4. Hexadecimal Number system.

5. Binary Coded Decimal Number system.

6. Negative Number system.

7. Number Conversations.

Explanation: The other numbers the Programmable Logic Controller(PLC) uses aside the decimal number system are:

1. Binary Number system.

2. Octal Number system.

3. Hexadecimal Number system.

4. Binary Coded Decimal Number system.

5. Negative Number system.

6. Number Conversations.

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