Computing

## Computing

#### Computing tools and activities

### Binary Tools

##### Floating Point Binary Activity

#### An activity to practice converting between denary real numbers and binary mantissa/exponent form. Includes error calculations
when the conversion invovles an approximation.

##### Floating Point Binary Conversions

#### A tool to convert between denary real numbers and binary mantissa/exponent form.

##### Number Systems

#### A tool to convert between binary,denary and hexadecimal.

##### Truth Table

#### A tools to create a truth table for an expression containing two, three or four Boolean variables

### Encryption Resources

##### Caesar Cipher

#### A tool to generate a Caesar cipher with a give shift from text and an activity to practice decoding encrypted messages

##### Polyalphabetic Cipher

#### A tool to generates a Polyalphabetic cipher with a give shift values from text and an activity to practice decoding encrypted messages

##### RSA Activity

#### A tool to generates an RSA cipher with given keys from text and an activity to practice decoding encrypted messages.
There are also activities to practice the number theory concept required by RSA Cryptography.

##### Vernam Cipher

#### A tool to generates a Varnam cipher with a given alphabet from text and an activity to practice decoding encrypted messages