- PLC
- What is a PLC
- Analog and Digital
- PLC Programming Languages
- Basic Logic Functions
- Combinatorial Logic
- wire break detection
- Algebraic Simplification of Logic Circuits
- Karnaugh map
- PLC Exercises I
- PLC exercise – Tank level monitoring
- Work Order PLC Material detection
- How a PLC works
- PLC function Set and Reset
- PLC-Program for H-Bridge
- Sequence control
- Analog value processing
- Number Systems

## Conversion between number systems

__Relation between Dual code and Hexadecimal code:__

When we compare the binary coded number ‘1100 1101’ with the number in hex ‘CD’, we recognize, that always 4 binary digits build a hex digit. The reason is that with 4 binary numbers exactly 16 numbers can be displayed (from 0 to F).

### Decimal to Binary

Decimal numbers can be converted to binary by repeated division of the number by 2 while recording the remainder. We explain it with an example:

**Decimal to Hexadecimal**

Decimal numbers can be converted to Hex by repeated division of the number by 16 while recording the remainder. Let’s take an example to see how this works.