© 1970 SCIENTIFIC AMERICAN, INC

Now there's a better way. Our new DOS brings batch processing costs down to $765 a month. If you've been hanging on to old-fashioned ways because you thought a computer was too expensive, think again. Our new Disc Operating System brings the cost of computation and general purpose processing right down to where your budget lives.

With our new DOS, you'l l easily create, check out and run your own programs. Use it for scientific calculations, business-accounting functions, information retrieval, inventory control, school administration - in fact, problem­solving of all kinds.

Anyone who can poke a typewriter key or pencil-mark a card can use our DOS. Because the assembly (or compilation ) , loading and execution o f your programs are under the control of a teleprinter keyboard or batch input device.

On the other hand, if you 're already batch processing with another system, give this a thought. Our DOS can probably do everything you' re doing now -for about half the cost.

Because both the software and the hardware are fully modular, our DOS accommodates the needs of many differ­ent applications. Lets you vary the number of input! output devices . Add more core memory. Use a card reader as well as teleprinter. Add a line printer, paper tape punch, photo reader and magnetic tape. Other advantages include software protection and program segmentation. Plus automatic program retention so your programs can be easily reused.

Our basic DOS includes an 8K computer with direct memory access, 2 . 4 million-character disc, one teleprinter and one high-speed paper tape reader. Price is j ust $35 , 600. Or $765 per month on a five-year lease. And it 's upward expandable for your future needs.

Get the full story by calling your local HP computer specialist. Or write Hewlett-Packard, Palo Alto, California 94304; Europe : 1 2 1 7 Meyrin-Geneva, Switzerland.

HEWLETT � PACKARD

D I G I T A L C O M P U T E R S 22009

© 1970 SCIENTIFIC AMERICAN, INC