Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/freehos1/public_html/projectus/core/open_close_dbase_connection.php on line 0

Deprecated: Function split() is deprecated in /home/freehos1/public_html/projectus/Railway-anticollision-system/index.php(0) : eval()'d code on line 22

Deprecated: Function split() is deprecated in /home/freehos1/public_html/projectus/Railway-anticollision-system/index.php(0) : eval()'d code on line 35

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/freehos1/public_html/projectus/scripts/get_ad_type_position.php on line 0

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/freehos1/public_html/projectus/scripts/load_ads.php on line 0

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/freehos1/public_html/projectus/scripts/sponsor_found.php on line 0

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/freehos1/public_html/projectus/scripts/load_links.php on line 0

Deprecated: Function split() is deprecated in /home/freehos1/public_html/projectus/Railway-anticollision-system/index.php(0) : eval()'d code on line 161

Deprecated: Function split() is deprecated in /home/freehos1/public_html/projectus/Railway-anticollision-system/index.php(0) : eval()'d code on line 164

Deprecated: Function split() is deprecated in /home/freehos1/public_html/projectus/Railway-anticollision-system/index.php(0) : eval()'d code on line 167
8255 port selection
projectus.freehost7.com:UG and PG level projects,mini projects and many more here ...







 

8255 Port selection

While chip select selects the entire chip, it is A0 and A1 that select specific ports. These three pins are used to access ports A, B, C or the Control Register according to table 1.Note chip select is active low.

 

8255 Control word format and port selection