Sender: monopoly MN Do you still need to bring fish fillets when you come back during the National Day? Message area: BBS Help Title: Terminal Experience Journey 2 Sending site: Sun and Moon Guanghua September 18, 2005 13:28:35 Sunday, site mail Now everyone understands that the 128 ASCII codes are sent by the keys and key combinations on the main keyboard area. So what characters will the keys in other areas of the standard keyboard send to the system? Below, we solemnly introduce the full tour guide for this trip. The <Esc> key located in the upper left corner of all keyboards <Esc>Introduce yourself I am Ctrl [Send character 27 in the ASCII code table 0x1B Known as the ever-changing wizard, the king of key combinations for all-round writers, the Escape key The <Ctrl> key combination is based on Ctrl. A certain character is 0x40 smaller than the ASCII code of the character itself, which is 64. The <Esc> key is different from it and is a real key combination. The ^[ it sends means Ctrl [the same below, which is considered by the system as the beginning of the key combination. The key combination we are most familiar with is the ANSI color control character called double Esc. In fact, 0x1B of <Esc> is the real ASCII code of this control character. When we press <Esc> for the first time, the system thinks that you want to send a key combination starting with this When we press <Esc> again, the system understands that what you want to send is <Esc> itself. In this way, the BBS system will display an * representing the ANSI control character <Esc> on the screen. Therefore, when we enter the ANSI color control character, we need to press <Esc> twice. In the color code copied from the terminal, there is only one <Esc> The <Esc> key combinations related to ANSI colors in the BBS system also include Esc b Set background color Esc f Set foreground color Esc r Restore color Esc c Display color effect The first three correspond to *[4xm *[3xm *[0m x is a certain color of 0 7 set Closer to home, everyone still wants to ask, when I press the up, down, left, right, Ins, Del, and F1 to F12 keys What characters are being sent? All 128 ANSI characters are occupied by the main keyboard area. The answer is that pressing these keys sends a string starting with <Esc> to the system. These special keys are actually the <Esc> key combination placed on the keyboard for convenience. to be continued Reprint: Sun and Moon Guanghua bbs.fudan.edu.cn [FROM: 10.100.111.111] Modification: monopoly modified this article at 13:35:54 on September 18th [FROM: 10.100.111.111]