(LED)
+----+
+NumL+
+----+
+----+----+----+----+
|Tab | / | * |Back|
| | | | Spc|
+----+----+----+----+
|7 |8 |9 |- |
|Home|Up |PgUp| |
+----+----+----+----+
|4 |5 |6 |+ |
|Left| |Righ| |
+----+----+----+----+
|1 |2 |3 | |
| End|Down|PgDn|Ent |
+----+----+----| |
|0 |00 |. | |
| Ins| | Del| |
+----+----+----+----+