6. A lead font character block, for use in a Chinese typewriter, having incorporated thereon a humanly-readable Chinese character and a machine-readable line code corresponding to said Chinese character, and having an even number of binary bits each 0-bit being represented by a line of a selected length and each 1-bit being represented by a line of a different selected length, the lines each having one end aligned in a straight line, said line code having first and second segments each having the same number of lines therein, one of said segments being inverted with respect to the other and the lines of said first and second segments being aligned with each one ends of the aligned lines in abutting relationship, thereby forming a line code having an odd number of lines which is uniquely representative of said even number of binary bits.
7. A character block as claimed in claim 6 wherein said line code is a 7-line code derived from 14-bit binary information identifying said Chinese character.