A computer, a digital information processing machine, works by modifying information into binary numbers (units and zeros) and then use simple math to make the decision about how to rearrange these numbers into words or actions. Digital system storage and use about information in a very specific way by storing the information in a bit (or many collections of parts). A bit is a variable that can have only one of two values: it can be 1 or 0.
There are two main things to understand the basics of how computers work:
- Computers process all kinds of information (not only numbers but also letters, words, dates) as if they were just binary numbers and zeros. For example, a computer can translates the letter "A" typed on his keyboard into a sequence of letters and zeros such as 1000001. One reason for this is that when in binary, information can Easier to store and move. On the hard disk, "those" can be stored as magnetized points on disk, while zeros can be stored as nonmagnetic points. After the information has been converted to 1s and zeros, the calculator can work.
- The second point to consider is motion-based computer functions and convert the electrical pulses (representing zeros and ones) into Process. Inside the computer are circuits that decode zeros and circuits, by adding and subtracting them. These circuits are called computer logic because The calculations they perform are similar to simple logical decisions. For example, if you press the A key on a computer keyboard, the circuits inside the computer receive pulses from power represents A in binary - 1000001. These pulses are sent to logic circuits make yes or no decisions based on the input they receive. Very simple the example would be a circuit that determines if the input sent to it is one or a zero. The output of the circuit is new information - binary or zero is the result of a simple yes or no answer.
Three subsystems of a computer
1. The main component of a CPU or central processing unit is its processor or the heart of computer. The microprocessor accepts groups of bits called instructions. This instructions tell the microprocessor what and how to process information.
2. Memory does exactly what its name implies - it stores bit values. It can either store the bits sent to it by the CPU, or send the value of those bits back to the CPU. Random Access Memory (RAM) - so named because it is supposed to meaning you can "randomly access" any bit of memory at any time. Because of that reason, when you turn off the computer, all data stored in RAM will be lost; it just leaked distant.
Hard drives - there are several types of hard drives:
Motherboard
