Liskov invented programs that are used by computers. They’re a basis for applications such as Java (platform independent software), C++ (C++ is a high-level programming language for large applications), C# (also known as “C sharp” used in .NET framework). These programs are then used to write software applications for computers. The applications range from business, medical, financial, personal applications, and some computer games. (Computer Hope 2016). Without Liskov’s base program we wouldn’t have the an organized structure to branch off of and basic applications would be much more complex than they already are.
During her invention of the CLU program was created on a mainframe computer, which slowly processed her work. Liskov and her team would work with numbers and variables unlike line code we commonly see today. Computers would interpret the code and give feedback via paper. The mainframe computers from the late 1960’s and 1970’s had a whole room dedicated to them and weren’t able to sit on top of a desk. These mainframe computers weren’t like our personal computers we use today. The introduction of a personal computer also known as a “micro-computer” wasn’t available until mid-1970.(Computer History Museum 2016). But just as a mainframe computer the “micro-computer’s” operating system wasn’t as interactive either. Below is an image of an IBM 704 mainframe computer. Liskov used a computer similar to this one during her school years and career.
An IBM 704 mainframe computer in use. Courtesy of VINTCHIP.COM™
