| 摘要 |
A data entry keyboard has a substantially circular central set of keys with at least two concentric circles of keys surrounding a centre key, and two lateral sets of keys extending generally radially away from opposite sides respectively of the central set of keys. The lateral sets of keys preferably form a shallow V-shape having a small number of rows, and the innermost keys of each row preferably also form part of the concentric circles of keys. |
