| 摘要 |
<p>PURPOSE:To exactly give a warning when the capacity of a battery has dropped, and to prevent a printing error, etc., by locking a key input by a detection signal of the battery capacity. CONSTITUTION:The battery capacity which is loaded on a printer P is measured, an E signal is inputted to a battery capacity drop detecting circuit S, and when the battery capacity has become below a prescribed value, a detection signal T is sent to CPU, and all the key inputs are locked. Accordingly, a warning can be given intelligibly and exactly against a drop of the battery capacity, and also an operation error, a printing error, etc. can be prevented by inhibiting a key input.</p> |
