ASC - Revision history

Admin at 20:55, 13 December 2014

2014-12-13T20:55:40Z

Admin at 20:55, 13 December 2014

2014-12-13T20:55:16Z

Admin at 20:54, 13 December 2014

2014-12-13T20:54:11Z

Admin: Created page with "= Action = Assigns a numeric variable with the ASCII value of the first character of a string. ..."

2013-02-06T22:49:26Z

Created page with "= Action = Assigns a numeric variable with the ASCII value of the first character of a string. ..."

New page

= Action =

Assigns a numeric variable with the ASCII value of the first character of a string.

 

 

= Syntax =

var = ASC(string)

 

 

= Remarks =
<div style="padding: 0px; margin: 0px 0px 0px 4px;">
{| width="604" cellspacing="0" cellpadding="1" border="1" style="border: 2px solid rgb(0, 0, 0); border-spacing: 0px; border-collapse: collapse;"
|- style="vertical-align: top;"
| valign="top" width="11%" style="width: 63px; border: 1px solid rgb(0, 0, 0);" |
Var

| valign="top" width="100%" style="width: 532px; border: 1px solid rgb(0, 0, 0);" |
Target numeric variable that is assigned.

|- style="vertical-align: top;"
| valign="top" width="11%" style="width: 63px; border: 1px solid rgb(0, 0, 0);" |
String

| valign="top" width="100%" style="width: 532px; border: 1px solid rgb(0, 0, 0);" |
String variable or constant from which to retrieve the ASCII value.

|}
</div>
 

Note that only the first character of the string will be used.

When the string is empty, a zero will be returned.

 

ASCII stands for American Standard Code for Information Interchange. Computers can only understand numbers, so an ASCII code is the numerical representation of a character such as 'a' or '@' or an action of some sort. ASCII was developed a long time ago and now the non-printing characters are rarely used for their original purpose. Below is the ASCII character table and this includes descriptions of the first 32 non-printing characters. ASCII was actually designed for use with teletypes and so the descriptions are somewhat obscure. If someone says they want your CV however in ASCII format, all this means is they want 'plain' text with no formatting such as tabs, bold or underscoring - the raw format that any computer can understand. This is usually so they can easily import the file into their own applications without issues. Notepad.exe creates ASCII text, or in MS Word you can save a file as 'text only'

 

[[File:Ascii table.png|center]]

 

= Extended ASCII =

As people gradually required computers to understand additional characters and non-printing characters the ASCII set became restrictive. As with most technology, it took a while to get a single standard for these extra characters and hence there are few varying 'extended' sets. The most popular is presented below.

 

[[File:Ascii table ext.png|center]]

 

 

= See also =

[[CHR]]

 

 

= ASM =

NONE

 

 

= Example =

 <source lang="bascomavr">
$regfile = "m48def.dat" ' specify the used micro
$crystal = 8000000 ' used crystal frequency
$baud = 19200 ' use baud rate
$hwstack = 32 ' default use 32 for the hardware stack
$swstack = 10 ' default use 10 for the SW stack
$framesize = 40 ' default use 40 for the frame space

Config Com1 = Dummy , Synchrone = 0 , Parity = None , Stopbits = 1 , Databits = 8 , Clockpol = 0

Dim A As Byte , S As String * 10
s ="ABC"
A = Asc(s)
Print A 'will print 65
End
</source> {{Languages}}

[[Category:BASCOM_Language_Reference]]

@@ Line 31: / Line 31: @@
 | valign="top" width="100%" style="width: 532px; border: 1px solid rgb(0, 0, 0);" |
 String variable or constant from which to retrieve the ASCII value.
 |}
 </div>
-<span style="font-family: Arial;">&nbsp;</span>
 Note that only the first character of the string will be used.
@@ Line 48: / Line 55: @@
 <span style="font-family: Arial;">&nbsp;</span>
-[[File:Ascii table.png|center]]
+[[File:Ascii table.png|center|Ascii table.png]]
 <span style="font-family: Arial;">&nbsp;</span>

@@ Line 9: / Line 9: @@
 = <span class="f_Header">Syntax</span> =
-var =&nbsp;<span class="f_Syntax">ASC</span>(string)
+var =&nbsp;<span class="f_Syntax">ASC</span>(string [,index])
 <span style="font-family: Arial;">&nbsp;</span>

@@ Line 85: / Line 85: @@
 <br/><source lang="bascomavr">
-$regfile = "m48def.dat" ' specify the used micro
+'------------------------------------------------------------------------------
 $crystal = 8000000 ' used crystal frequency
 $baud = 19200 ' use baud rate
@@ Line 95: / Line 104: @@
-Dim A As Byte , S As String * 10
+Dim A As Byte , S As String * 10 , idx as Byte
-s ="ABC"
+Print "ASC demo"
 A = Asc(s)
 Print A 'will print 65
 End
 </source><br/>{{Languages}}
-[[Category:BASCOM_Language_Reference]]
+[[Category:BASCOM Language Reference]]