compiling sketch

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arduino: 1.6.9 (windows xp), board: "arduino/genuino uno"
i copied temperature/humidity sketch
online tutorial , received message when compiling.
see attached copy of error message.
any clues in error?



c:\documents , settings\richard\my documents\arduino\temp-hum\temp-hum.ino:10:19: fatal error: dht11.h: no such file or directory

 #include <dht11.h>

                   ^

compilation terminated.

exit status 1
error compiling board arduino/genuino uno.

this report have more information with
"show verbose output during compilation"
option enabled in file -> preferences.

have downloaded , installed dht11 library?  have library files located on computer?


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