HP HP-Bench-Briefs-1981-03-05 free download

File name HP-Bench-Briefs-1981-03-05.pdf

1 SERVICE INFORMATION FROM HEWLETT-PACKARD - INSIDE \ MARCH-MAY 1981 Elements and Terminology In all X-Y display applications, the purpose is to draw an image on the screen for human interaction. How- ever, before discussing the methods of drawing these images, it is impor- tant to discuss display-related ter- All About CRT's minology and some of the important elements of a picture. Once this By Jim Bechtdd, Editor common ground is established, the methods of forming a picture can be analyzed in detail. The important aspects of any picture are resolution, brightness and data density. An oscillompe is 811 in&rument In 1879, William Crookes demon- signals is applied to the horizontal deflection (X-axis) sysbm, and the strated the ability to deflect cathode rays in a vacuuIll tube with a mag- beam spot divided i t no net. Cathode rays had earlier been Sh e of causing phos- ity of a spot is not uni- Ph the glass walls of a its di