| 摘要 |
PURPOSE:To soften the sense of incongruity to be felt by a user of drafter, by displaying a scale marked with degrees, on a CRT, and making it movable in parallel and rotatable on the scope of the CRT. CONSTITUTION:A computer 1 is constituted of a CPU11, memory 12 and an input/output interface 13. A CRT controller 3 draws a straight line, curve, character, numeral, etc. on a CRT4 in accordance with an instruction of the computer 1, and a tablet digitizer 5 is used not only for a coordinate indication and a menu indication but for a drafter scale operation. An orthogonal scale displayed on the CRT4 can execute parallel movement or rotation on the CRT scope. |
