1975 ad: Easiest to Use Microprocessor

. Saturday, April 27, 2013

Easiest to Use Microprocessor. The 2650-static, 5V, TTL compatible, 8-bit. Conceptual simplicity is the key to the 2650's ease of design. This is static, not dynamic. Its multiple addressing modes mean fewer instructions. Even the instruction set is extra powerful to increase coding efficiency. Features that add up to less memory required, less design time. Less parts cost and assembly time. More value. Illustrated: Parts for 6-package system. Can be purchased for under $100 in quantities of 1. How much less than $100? In large quantities, the parts could go below $50. But what's most important is that if you build a larger system -- perhaps with 5 or 10 times the memory, plus more I/O -- you'll do it with the greatest of ease, and increase your savings still further. Because the 2650 won't need the special (and expensive) memory and LSI I/O chips required in other microcomputer systems. What's an outstanding value in small systems becomes an unbeatable value as the systems get larger. Convince yourself by looking at this beautifully simple Teletype system, a typical example. 1. Only one +5V power supply drives everything in the system; and this microprocessor is really low power: just 52m W max. 2. Standard, low-cost memories -- your choice. This 6-package system with TTY interface uses only 3 ICs to give you 1024 bytes of standard ROM, 256 bytes of standard RAM. ROM can contain bootstrap loader and I/O driver programs for the TTY, plus operating programs for the system. Other programs plus data can also be in the ROM or written into the RAM by the TTY. Or use a PROM instead of a ROM for maximum flexibility. 3. Single-phase, TTL compatible clock input eliminates the nest of transistors, crystal and extra ICs some other microprocessors require. Simple, cheap. Works better. 4. On-chip serial interface eliminates a 24-pin IC. And its cost. And its space. And its connections. 5. Where are the special interface chips? There aren't any in this sample system. And not much in any other system you might design with the 2650. With much of the I/O bult into the 2650, you can interface the I/O devices with simple, low-cost, industry-standard 74LS, 7400 and 8T circuits. For instance, get both input and output with the 8T31 Bidirectional I/O port. Or take the 8T26 Quad Bus Driver as another example. Signetics offer fifty 8T types and nearly everything in 74LS and 7400 -- all low cost, all industry standards. Lower parts cost means much greater value. Software and people to back the 2650 are here now. Cross assemblers and simulators are available in batch and on timeshare. (The assemblers come in both 32- ad 16-bit formats because we realize that not everyone has a 32-bit machine.) And there's a prototyping card (CPU, RAM, ROM) with debug firmware. Documentation, manuals, application notes. Plus training seminars and  on-spot field applications engineer assistance. You get more computer with fewer parts at less cost with the 2650. That's high-technology value. Send now for complete details and prove it to yourself. Signetics 811 E. Arques Ave., Sunnyvale California 94086

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