| 摘要 |
PURPOSE:To make it possible to contrive a sufficient enhancement of the function of an information processor, by containing in a container a circuit board on which circuit component parts for enhancing the function of the information processor or the like are mounted. CONSTITUTION:A printer unit as an information processor comprises a typewriter T which is a printer capable of being used alone, a circuit box K containing a plurality of circuit boards 10 for adding a displaying function or the like to the typewriter T, and a display device D connected to the circuit box K. The circuit box K can be easily fitted to the typewriter T at one stroke, simply by engaging both latch pieces 16 of the box K respectively into both lower holes 7 of the typewriter T, fitting base pieces 27 of both metallic fasteners 24 into both upper holes 4, and turning knobs 26a of fastening screws 26. Accordingly, fitting and detaching of the circuit box K from the typewriter T can be facilitated. |
