The radix of a signed basic integer is 2, because the way to store data in a computer is to use binary encoding. Inside the computer, all data will be represented by a binary number, which will be used for storage and operation. Therefore, signed basic integers also represent data in radix 2. Signed basic integers include different types of integer data such as integers, short integers and long integers. They all represent data in binary code, and the calculation is based on 2.