Identification code input board for electrical equipment including electrical locks

Claim 1

An identification code input board for actuating electrical equipment comprising: a display panel crosswise arranged in the form of M lines X N rows while including a plurality of display sections, of which number is represented by a numeral of M X N, to display a group of codes, of which number is represented by a numeral of m X n, and which are extensively developed in accordance with a predetermined arrangement pattern in the form of m lines X n rows where each of m and n is a positive integral number of two or more and each of M and N is a positive integral number larger than that of m and n respectively, said display panel including a non-display section around said display sections having said group of codes displayed thereon; a transparent key switch sheet superimposed on a front side of said display panel while including a plurality of switches arranged corresponding to said display sections of which number is represented by numeral M X N; a display converter for selecting one of a plurality of display formats, of which number is represented by a numeral of (M-m+1) X (N-n+1), every time the electrical equipment is actuated, while said arrangement pattern for said group of codes, of which number is represented by a numeral m X n, is kept unchanged, and a code reader for outputting a digitized code signal for distinguishing a selected code when a user's finger is brought in contact with one of said display sections having said selected code displayed thereon while maintaining one of said display formats for one of said group of codes of which number is represented by a numeral of m X n.