Video Monitor For Microcomputers Introduced by Zenith Data Systems
Information Display · 1981
A monochrome video monitor for use with microcomputers has been introduced by Zenith Data Systems. The low-cost monitor has a green screen, is housed in a tan plastic cabinet, and has a switch to select either 40- or 80-character display. A low-cost 12-inch video monitor for microcomputers was recently introduced by Zenith Data Systems, Glenview, IL. The new ZVM-121 monitor has a green screen and a switch to select either 40- or 80-character display. Housed in an orchard brown cabinet, the new monitor is compatible in styling, size and color with the Apple II and Apple III microcomputers. It is also small enough to sit on top of most other microcomputers without built-in video monitors. The ZVM-121 displays an 8 × 10character matrix and up to 24 lines of information. Exterior controls include power, black level, contrast, horizontal and vertical adjustment, and vertical size adjustment. A switch also permits selection of 40- or 80- character display. The new video monitor has a bandwidth greater than 12.5 MHz and a rise time of about 60 ns, improving the definition of its characters. The DC-coupled video circuits used by the ZVM-121 are said to permit the display to retain its brightness when the screen is full of information. The refresh rate is 60 Hz at 60 Hz line frequency. Power dissipation is about 26 W at 120 V.