How are computer systems developed? Curious students

It started with a typewriter and slowly changed.

Working from home during the special period, I hope you can learn how to make computer systems and assemble computers.

The earliest was the DOS system, I remember installing it with a floppy disk a long time ago, purely commanding.

Here's a detailed look at how the world's first computer was written.

This can be understood, there are those who produce instant noodles, there are those who produce instant noodles, one who makes food, the other who makes machinery, and that's it.

It's mainly with a pen or something.,Can't figure it out.,Just try to spell some electronic originals.,And then there's a boss system.,Then there's computer hardware.,Finally, I figured out the system or something.。

This should be a nuisance.

The first computer did not have an operating system. This was due to the fact that early personal computers were built (like building mechanical computers) and were not powerful enough to perform such programs.

But the invention of the transistor in 1947, as well as the microprogramming method invented by Maurice Vincent Wilkes, made the computer no longer a mechanical device, but an electronic product. System management tools and programs that simplified the process of operating hardware soon appeared and became the basis of the operating system.

By the early 1960s, commercial computer manufacturers were building batch processing systems that could create, schedule, and serialize work. At this point, manufacturers create different operating systems for each different model of computer, so programs written for one computer cannot be ported to other computers, even those of the same model.

By 1964, IBM had launched a series of mainframe computers, IBM System 360, mainframe classics, for different purposes and price points. They all share an operating system codenamed OS 360 (not every product has a custom-made operating system). Adapting a single operating system to the entire family of products is key to the success of System 360, and IBM Large Systems is in fact a descendant of this system; Applications written for System 360 can still be executed on modern IBM machines!

OS 360 also includes another advantage: the advent of the permanent storage device, the hard disk drive (known as the Direct Access Storage Device (DASD (IBM)). Another key is the establishment of the concept of time-sharing:

Allocate the precious time resources of the mainframe computer appropriately to all users. Time-sharing also gives the user the feeling of monopolizing the entire machine; The multics time-sharing system was the most successful implementation of this concept among the many new operating systems at this time.

In 1963, Singular cooperated with Bell Labs to build Multics in PL I language, which was the inspiration for the creation of many operating systems in the 1970s****, especially the UNIX system built by Dennis Ritchie and Ken Thompson of AT&T Bell Labs, which was rewritten in C in 1969 in order to practice platform portability; Another widely adopted small computer operating system is VMS.

The lowest level of the computer can only know one language, which is binary encoding, 1 or 0.

The earliest programming is to program binary code, and later for convenience, the assembly language was programmed, and the assembly language can be programmed by ordinary people, and a lot of software is made using assembly language, such as the DOS system is also a kind of software.

The C language was developed using assembly, and WinODWS was developed using the C language.

It's a pure DOS system, it was written by the Americans, and I don't remember the name.

There is no strict sense of the word, it is all the result of continuous improvement, correction and upgrading by generations of engineers.

The first operating system is DOS, which is a single-task, single-user system.