4114

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The Tektronix 4114 is a graphics terminal that uses a 19" direct-view storage CRT, introduced in 1982. The 4114B update was introduced in 1984 and added local processing.

Typically, the 4114 is connected to a computer via RS-232. There is an on-screen "dialog area" where a textual interaction with the computer can be seen. The computer can also send drawing commands to the 4114, which are rendered by the 4114. The microprocessor in the 4114 is the Intel 8086.

Key Specifications

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From Tekscope June 1981:

With flicker-free refresh it is sometimes difficult to distinguish between refreshed and stored images on the screen. The 4114 Color Enhanced Refresh option resolves that difficulty by displaying all refresh vectors in a second color. The color-refresh DVST displays stored information in the usual green color, while refreshed objects appear as a yellowish orange hue easily distinguishable from the stored information.

Color refresh is accomplished by using a mixture of red and green phosphors for the DVST screen. In refresh mode, the writing beam excites both red and green phosphors, resulting in a yellowish-orange trace on the screen. The refreshed information, however, is displayed at a current density lower than that required to store a charge image. To remain visible, the information must be continually refreshed. In storage mode, the writing beam also excites both red and green phosphors causing a momentary yellowish orange glow. In this case, the current density is high enough to store a charge image. After the writing beam draws the image, only the green phosphor continues to emit light. The red phosphor does not store because it requires a higher charge level to luminesce than does the green phosphor.

Links

Documents Referencing 4114

Document Class Title Authors Year Links
Tekscope 1981 V13 N2.pdf Article Two New Graphic Terminals Expand Graphic Capabilities Dean Bailey Jack Sterett Dave Squire 1981

Patents that may apply to 4114

Page Title Inventors Filing date Grant date Links
Patent US 4301388A Color coding of write-through information in direct viewing bistable storage CRT display William M. Mason 1977-06-02 1981-11-17

Pictures

Components

Some Parts Used in the 4114

Part Part Number(s) Class Description Used in
154-0785-00 154-0785-00 154-0785-01 154-0785-02 154-0785-03 154-0785-52 CRT 19" direct-view storage CRT GMA102A 4054 4054A 4114 4114A 4114A30 4114B 4116A 4116B 618
Intel 8086 Monolithic integrated circuit 16-bit microprocessor 1240 2220 2221 2230 2246 2232 2245A 2782 4114 4115