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4052: Difference between revisions
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Released in 1978, the 4952 came with a full 32 kB of RAM for $9,795 ($44,500 in 2022 dollars) and could be expanded to 64 kB for another $1,995 (2022: $9,070) for a total cost of $11,790 (2022: $53,600). | Released in 1978, the 4952 came with a full 32 kB of RAM for $9,795 ($44,500 in 2022 dollars) and could be expanded to 64 kB for another $1,995 (2022: $9,070) for a total cost of $11,790 (2022: $53,600). | ||
The '''4054''' is a version of the 4052 built around the 19" screen from the [[4014]] terminal rather than the 11" screen from the [[4012]], increasing display resolution to 4,096 by 3,072. The 4054 also had an | The '''4054''' is a version of the 4052 built around the 19" screen from the [[4014]] terminal rather than the 11" screen from the [[4012]], increasing display resolution to 4,096 by 3,072. The 4052 and 4054 can display a limited amount of refreshed graphics. This is done by lowering the beam current of the writing gun so it does not trigger the threshold for stored display. The 4054 also had an Option 30 to display an extensive amount of refreshed graphics that used a [[wikipedia:Signetics 8X300|Signetics 8X300]], an early RISC-like microprocessor. There was also an Option 31 CRT with a special multi-layer phosphor to display the refreshed graphics in orange, against the stored graphics in green. The Option 30 was originally what was known at Tek as a "G-job", an unofficial project by Steve Rintala, which was eventually approved by management. | ||
In early 1980s, Tektronix introduced the 4052A and 4054A facelift models, changing from ROMs with patch ROMs to EPROMs for the firmware, and replacing the discrete GPIB software implementation with a [[TI9914]] GPIB controller for higher GPIB performance. | In early 1980s, Tektronix introduced the 4052A and 4054A facelift models, changing from ROMs with patch ROMs to EPROMs for the firmware, and replacing the discrete GPIB software implementation with a [[TI9914]] GPIB controller for higher GPIB performance. | ||