4025
The Tektronix 4025 is a raster graphics terminal. The 4024 is a text-only variant. please expand
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Key Specifications
| CRT | 11" diagonal (7.5"x5.6" / 19.1x14.2 cm²), green P39 phosphor |
|---|---|
| Graphics resolution | 640 × 480 pixels |
| Alphanumeric format | 35 lines, 74 characters per line, 5×7 dot matrix |
| Character set | 63 characters |
| Vector draw time | 3.6 ± 0.2 ms |
| Baud rate | 75 to 4800 baud |
| Input power | 110/240 VAC, 50 to 440 Hz, 105 Watts |
Links
- Tekscope Vol. 10 No. 1, Feb 1978 discusses the 4025
- Tektronix 4025 @ terminals-wiki
- A Granite 4025 @ vintagetek.org
Documents Referencing 4025
| Document | Class | Title | Authors | Year | Links |
|---|---|---|---|---|---|
| Tekscope 1978 V10 N1.pdf | Article | The Virtual Bit Map Brings High Resolution Graphics to the Alphanumerics Terminal User | Stan Davis | 1978 | 4025 |
| Tekscope 1978 V10 N1.pdf | Article | A New Concept in Data Representation: The Complete Integration of Graphics and Alphanumerics | Jack Liskear | 1978 | 4025 |
Internals
The 4024/4025 use an Intel 8080A CPU. Later it was upgraded to an 8085 to increase speed.
Pictures
- please add
Components
Some Parts Used in the 4025
| Part | Part Number(s) | Class | Description | Used in |
|---|---|---|---|---|
| 2N5060 | 151-0503-00 | Discrete component | 30 V, 0.8 A thyristor (SCR) | CG551AP • C50 • C51 • C52 • C53 • C70 • DC505 • DC505A • DC508 • DC508A • 1240 • 1241 • 212 • 213 • 214 • 4014 • 4015 • 4025 • 4027 • 4105 • 4106 • 4107 • 4109 • 4111 • 450 • 4623 • 4631 • 4632 • 4633A • 485 • 5D10 • 5223 • 7D10 • 7D11 • 7L12 • 7L13 • 7L14 • 7L18 • 7912AD • 91HS8 |
| Intel 8080 | 156-0954-00 | Monolithic integrated circuit | 8-bit microprocessor | 4024 • 4025 • CT 8101 • Rockland 7530A • Rockland 7530B |
| Intel 8085A | 156-1088-00 | Monolithic integrated circuit | 8-bit microprocessor | 308 • 468 • 4025 • 7A42 • 7D02 • AFG5101 • AFG5102 • PFG5105 |