They had been used before that. they were simply intergrated to the computer programming system after along period. the power symbol was developed in ww2.
The answer to the question: A simple symbolic interface was developed to operate computers, would be: True.
Explanation:
Before computer interfaces developed more technologically, they depended on text-based interfaces and learning to actually use commands in order for the person to correctly interact with the computer. This system was complex and less user-friendly. However, as the use of the computer extended, and the need for it increased, the need for easier-to-use interfaces grew. Thus, the graphical user interfase, or GUI, was born, allowing people to interact through graphics and visual icons. This simplified greatly the operation of computer systems and it also made it universal, so that, regardless of the language used, the icons and graphics are commonly understood.
What most people don't know is that ancient Nubia was the site of highly advanced black African civilizations that rivaled ancient Egypt in wealth, power and cultural development. In fact, Nubian kings ruled over Egypt as pharaohs for nearly 100 years.
