Graphical Data Display Manager

GDDM (Graphical Data Display Manager) is a computer graphics system for the System/370, which was developed in 1979 by IBM. GDDM was originally developed for the IBM 3279 color monitor and color printer 3287. The color screen 3279 was the first color display, which has been used in offices.

GDDM was expanded in the early 1980s in order to be used on all IBM monitors and printers can.

From 1986 GDDM was used under the name IBM System/38 Business Graphics Utility ( Program 5714 -GP1 ) on the System/38.

Program Example Pascal

PROGRAM LINECHRT; TYPE     % INCLUDE QATTPAS ( ADMUSTNO ); / * Type declarations of IBM * / VAR     A, B: INTEGER; / * Working variables * /     AX, AY: REALARR_20; / * Parameters for CHPLOT * /     ATTVAL, ATTYPE, COUNT: INTEGER; / * Parameters for ASREAD * / % INCLUDE QATTPAS ( ADMUSLNO ); / * Proc declarations of IBM * / BEGIN   / * Initialization * / AX ( .1. ): = 1.0; AY ( .1. ): = 5.0; AY ( .6. ): = 8.0; / * Array init. * / AX ( .2. ): = 2.0; AY ( .2. ): = 3.0; AY ( .7. ) = 13.0; AX (.3. ): = 3.0; AY (.3. ): = 5.0; AY ( .8. ): = 6.0; AX ( .4. ): = 4.0; AY ( .4. ): = 5.0; AY ( .9. ): = 1.0; AX (.5. ): = 5.0; AY (.5. ): = 11.0; AY ( .10. ): = 7.0; FSINIT; / * Initialize graphics environment * /   / * Chart drawing * / A: = 2; B: = 5; CHPLOT (A, B, x, a y ); / * Chart drawing * / ASREAD ( ATTVAL, ATTYPE, COUNT ); / * Display graph * /   / * End * / Close FSTERM / * graphics environment * / END. End / * Pascal program * / Web Links

  • IBM's GDDM side (English )
  • IBM announcement of 3279 and 3287 (English)
  • GDDM supported terminals (English)
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