By V. Anton Spraul
A Brand-New ebook on a necessary subject: machine technology Made basic deals an easy one-stop source for expertise beginners and complicated techies alike. V. Anton Spraul clarifies the elemental techniques of and software program in addition to networks, the web, pictures, and different purposes, emphasizing tips on how to positioned desktops to be just right for you (instead of the wrong way around).
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Additional info for Computer Science Made Simple: Learn how hardware and software work-- and how to make them work for you!
Thus, having more registers is an advantage. 2—CPU Organization The CU, or control unit, controls the movement of data inside the CPU. It can be thought of as the CPU’s traffic cop. It determines, for example, which registers are sent to the ALU for computation. The CU is itself controlled by the program the CPU is executing. A program is made of a series of instructions. The format of these instructions is specific to the particular model of CPU and is known as the machine language of the CPU.
This is short for “bootstrapping,” which means to lift oneself up by one’s own bootstraps, as the expression goes, which is analogous to the seemingly impossible task the computer has when it starts. The secret ingredient is called the BIOS, which stands for Basic Input/Output System. This is a set of small programs stored in ROM. Recall that ROM, as in CD-ROM, means read-only memory. Here it refers to memory that is accessed like RAM but is “hard-wired”; that is, it can’t be changed. When a computer’s power is turned on, the BIOS acts like a drill sergeant waking up the troops.
Even the space between words is a character. When you read that some computer devices can store as much data as a novel or an encyclopedia, that piece of information is relying on the idea of one byte equals one character. If the average word length is five characters (four letters plus the space before the next word) and a typical novel has 80,000 words, then it takes 400,000 bytes to store a novel. Any data can be stored as binary, as long as every possible value can be matched with a whole number, which can then be turned into a binary value.
Computer Science Made Simple: Learn how hardware and software work-- and how to make them work for you! by V. Anton Spraul