1. A human interface device, comprising: a text input unit comprising a plurality of physical buttons; a pointer location input unit comprising a motion detection area formed on a surface of the physical buttons, the pointer location input unit receiving information related to a pointer location from a user motion on the motion detection area, wherein the pointer location indicates a location of a pointer displayed on a digital device connected to the human interface device via wired or wireless connection; a first button configured to activate or deactivate a pointer location input mode and to execute at least one function at the pointer location; a communication unit configured to transmit the information related to the pointer location to the digital device; and a foldable cover coupled to the text input unit to protect the text input unit, wherein the first button is provided in an area separate from the text input unit, wherein the first button comprises a capacitive touch sensor which detects a user touch input, the pointer location input mode being temporarily activated while the user touch input is maintained without mechanically pressing the first button, wherein the at least one function at the pointer location is executed when the first button is mechanically pressed, wherein the pointer location input mode is permanently activated without maintaining the user touch input while the first button is locked.
1. A human interface device, comprising: a text input unit comprising a plurality of physical buttons; a pointer location input unit comprising a motion detection area formed on a surface of the physical buttons, the pointer location input unit receiving information related to a pointer location from a user motion on the motion detection area, wherein the pointer location indicates a location of a pointer displayed on a digital device connected to the human interface device via wired or wireless connection; a first button configured to activate or deactivate a pointer location input mode and to execute at least one function at the pointer location; a communication unit configured to transmit the information related to the pointer location to the digital device; and a foldable cover coupled to the text input unit to protect the text input unit, wherein the first button is provided in an area separate from the text input unit, wherein the first button comprises a capacitive touch sensor which detects a user touch input, the pointer location input mode being temporarily activated while the user touch input is maintained without mechanically pressing the first button, wherein the at least one function at the pointer location is executed when the first button is mechanically pressed, wherein the pointer location input mode is permanently activated without maintaining the user touch input while the first button is locked. 6. The human interface device of claim 1 , wherein, after the foldable cover is folded, the foldable cover is mounted on a bottom surface of the human interface device to adjust inclination of the human interface device.