Coding schemes make it possible for humans to interact with a digital computer that processes only bits. When you press a key on a keyboard, a chip in the keyboard converts the key’s electronic signal into a special code that is sent to the system unit. Then, the system unit converts the code into a binary form the computer can process and stores it in memory. Every character is converted to its corresponding byte. The computer then processes the data as bytes, which actu ally is a series of on/off electrical states. When processing is finished, software converts the byte into a human-recognizable number, letter of the alphabet, or special character that is displayed on a screen or is printed
(Figure 4-15). All of these conversions take place so quickly that you do not realize they are occurring.
Coding schemes make it possible for humans to interact with a digital computer that processes only bits. When you press a key on a keyboard, a chip in the keyboard converts the key’s electronic signal into a special code that is sent to the system unit. Then, the system unit converts the code into a binary form the computer can process and stores it in memory. Every character is converted to its corresponding byte. The computer then processes the data as bytes, which actu ally is a series of on/off electrical states. When processing is finished, software converts the byte into a human-recognizable number, letter of the alphabet, or special character that is displayed on a screen or is printed(Figure 4-15). All of these conversions take place so quickly that you do not realize they are occurring.
การแปล กรุณารอสักครู่..
