| 摘要 |
A keyboard includes a housing, which includes a front surface, a rear surface, and a top surface. The top surface has a key zone. A number of keys formed on the key zone. An air inlet is defined in the rear surface. A number of air outlets are defined in the key zone. A fan is received in the housing adjacent to the air inlet. The fan is configured for forcing air to flow into the housing through the air inlet. A heating element is positioned in the housing and configured to heat up the air in the housing. A switch is configured to switch on or off the heating element. |
