IBM made the crucial decision to use an open architecture for its PC, using components from outside suppliers. They chose the Intel 8088 microprocessor, a decision that helped establish Intel's dominance in the PC market for decades.

Vinton Cerf and Robert Kahn are known as the "Fathers of the Internet" for their pioneering work in the 1970s on designing the TCP/IP protocol suite, which defines how data is transmitted across networks.

Blaise Pascal invented the Pascaline in the 1640s to assist his father, a tax commissioner, with tedious arithmetic calculations. Its innovative design utilized a system of interconnected gears and dials. While revolutionary for its era, the Pascaline was fundamentally engineered for direct performance of addition and subtraction. More complex operations like multiplication and division could be performed through repeated additions or subtractions, respectively, but these were not direct functions of its mechanical design. Square roots and exponents were beyond its direct capabilities.

HTTPS (Hypertext Transfer Protocol Secure) is an extension of HTTP. It is used for secure communication over a computer network and is widely used on the Internet, especially for e-commerce and online banking.

In 1995, the NSFNET, which had served as the backbone of the Internet, was decommissioned, and restrictions on carrying commercial traffic were lifted. This opened the floodgates for the commercialization and rapid growth of the Internet.

A Uniform Resource Locator (URL) is a reference to a web resource that specifies its location on a computer network and a mechanism for retrieving it. It is colloquially known as a web address.

The magnetic disk drive, which revolutionized data storage by providing random-access capabilities, was developed by International Business Machines (IBM) in the 1950s. Specifically, a team led by Reynold B. Johnson at IBM developed the IBM 350 Disk File, first shipped in 1956 as a component of the IBM 305 RAMAC (Random Access Method of Accounting and Control) computer system. This invention marked a significant advancement over sequential storage methods like magnetic tape, enabling much faster retrieval and processing of information. Apple and Microsoft were founded much later and focused initially on personal computing and software, respectively. Bell Laboratories was a significant innovator in many fields, including transistors, but not the magnetic disk drive.

Dennis Ritchie is widely recognized as the creator of the C programming language. Developed at Bell Labs between 1969 and 1973, C was instrumental in the rewriting of the Unix operating system, making it more portable and efficient. Its design principles, emphasizing efficiency, low-level memory access, and portability, profoundly influenced many subsequent programming languages, including C++, Java, and Python. The other options are notable computer scientists: John McCarthy developed Lisp, Niklaus Wirth created Pascal, and Bjarne Stroustrup developed C++.

After being forced out of Apple, Steve Jobs founded a company called NeXT. The advanced, object-oriented operating system they developed, NeXTSTEP, became the basis for Mac OS X (now macOS) when Apple acquired NeXT in 1997.

The computer mouse was invented by Douglas Engelbart and his team at the Augmentation Research Center (ARC) at SRI International in the 1960s. This groundbreaking invention was part of a much larger project called the oN-Line System (NLS), which was designed to revolutionize human-computer interaction and 'augment human intellect.' Engelbart's work laid essential foundations for graphical user interfaces, hypertext, and collaborative computing, concepts that are ubiquitous in modern computing. Steve Jobs (Apple), Bill Gates (Microsoft), and Gordon Moore (Intel) are prominent figures in computer history but were not the inventors of the mouse.