A computer keyboard includes a keypad having upper, middle and lower rows, each row having at least three keys. The keypad is capable of operating in a PC mode and a telephone mode. In a PC/numeric submode, keys in the upper row correspond to the numbers 7-9 and keys in the lower row correspond to the numbers 1-3. In a PC/cursor-control submode, at least one key in each row corresponds to a cursor control command. In the telephone mode, keys in the upper row correspond to the numbers 1-3 and keys in the lower row correspond to the numbers 7-9.