All computer systems have

All computer systems have all the hardware and software for proper functioning.

Explanation:

With the required software and hardware, a computer system will have the ability to receive input, process the information and store the data or display the output. The computer systems include Monitor, keyboard, CPU (Central processing Unit) and other optional components.

Data processing is done using various instructions known as programs that can be written in different computer languages. To perform different operations logically, the instructions are given as set of programs. Without proper instructions, computer would not know how to process the information with which the data will be discarded.

they all have ram memory software