Su Huangyong's Third week reading report

The world is digital.

The inside of the computer

The real computer appeared 1946 years after the end of the Second World War. At that time the computer was so large that we could not imagine it now (but could estimate the actual size), and its nickname aptly reflected its big-"elephant"! The initial computer can only expand some of the more elementary programs, which are less computationally fast than the worst PCs currently sold on the market. In the absence of large-scale use of air conditioning, "elephant" calorific value can be dry winter wet clothes! Now, 70 years later, the computer is not just in front of me, but also on the table of millions of people, in everyone's hands, in the Three Gorges Dam, on the high-speed rail.

I used to think that the computer was responsible for computing the majority of the whole computer, but in fact, the vast majority of the entire computer is used to store, and a small part of the calculation. A computer's CPU, or central processing unit, is the brain of a computer. CPU computing speed depends on the development of modern microelectronics technology, but now the computer can be installed more than one CPU, I can in a single CPU capacity is insufficient, by increasing its number to make the whole computer run faster.

Of course, the computer still needs a lot of space to store programs. There's always a mix of memory space and disk space. Memory is a bridge that communicates with the CPU. All of the computer's programs run in memory, so the good or bad memory affects the performance of the computer. Disk space is just a place to store programs that are temporarily unavailable. So the size of the memory does not have much to do with the size of the disk.

Su Huangyong's Third week reading report