Indicating apparatus for indicating numerals or letters by a plurality number of indicating elements

Claim 1

An indicating apparatus comprising: a plurality of indicating parts respectively having a plurality of indicating elements operated to indicate and maintain their indicating states; indicating element driving means provided in respective indicating elemtns and adapted to drive said indicating elements; a first group of transistors provided in correspondence with respective indicating parts and adapted to close and open current supplying lines to respective indicating element driving means for each of said indicating parts; a group of AND gates adapted to carry out ON and OFF control of respective transistors of said first group of transistors; means for sending a signal to said AND gates group interrelatedly with indicating initiation operation; means for generating indicating signals; indicating element driving circuits provided in correspondence with each of said indicating parts; and means for supplying said indicating signal to said indicating element driving circuits sequentially in a time-division manner with a first period, and further for sending a time-division signal to said AND gates group sequentially with the first period, said transistors of said first group of transistors being rendered ON and OFF sequentially in a time-division manner with the first period by means of said AND gates group, and said indicating element driving circuits causing said indicating element driving means to operate sequentially in a time-division manner with a second period which is shorter than the first period.