| 摘要 |
<p>An input signal (In) is supplied to an input terminal (3), a switch (7) and a resister (9) are connected between an electric power source terminal (1)-the input terminal (3), a switch (8) and a resister (10) are connected between a ground terminal (1)-the input terminal (3), resisters (11-16) are serially connected between switches (7, 8), an output at a connecting node of the input terminal (3) and an output at each connecting node of the resisters (11-16) are compared by respective comparators (17-21), and outputs of the comparators (17-21) are coded and output by a latch circuit (22), so that six-value are possible to be detected and a multiple-value detection with electric power saved is also achievable by means of an intermittent operation in accordance with a clock signal.</p> |
