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the PET
keyboard

The PET keyboard consists of 73 keys There are the usual alphanumerics
1A Z and 0-9) found on typewriters and calculators and many computers.
But the PET has something more 64 graphic characters. The graphics can be
used for plots, for fun and games, or for artwork.

There are also special screen and keyboard control keys which allow the
moving of the cursor in four directions, the reversing of characters
and background, the inserting and deleting of characters. Shift keys
and a run stop key are also provided to facilitate keyboard operations.

specifications

Dimensions: 16½" wide by 18½ "
   14" Overall height deep.

Weight: 44lbs

MEMORY
Random Access Memory (user memory):
   4K for 8K optional) are internal,
   expandable to 32K bytes of which
   24 (or 28) are external

Read Only Memory (operating system resident in the computer): 14K bytes

   8K - BASIC interpreter
   4K - Operating system
   1K - Diagnostic routine
   1K - Machine language monitor

VIDEO DISPLAY UNIT
9" enclosed, black and white, high-
   resolution CRT
1000 character display, arranged 40
   columns by 25 lines
8 x 8 dot matrix for characters and con-
   tinuous graphics
Automatic scrolling from bottom of
   screen
Winking cursor with full motion control

Reverse field on all characters intense
   on black or black on white)

54 standard ASCII characters; 64 graphic characters

KEYBOARD
9½ " wide x 3" deep: 73 keys
All 64 ASCII characters available
   without shift. Calculator style numeric    key pad
All 64 graphic and reverse field characters accessible both keyboard (with shift)
Screen Control: Clear and erase
Editing: Character insertion & deletion

CASSETTE STORAGE
Fast Commodore designed redundant
   recording schema, assuring reliable
   data recovery
Cassette drive mod
ified by
   Commodore for much higher
   reliability of recording and record
   retention
High noise immunity, error detection,
   and correction

Uses standard audio cassette tapes
Tape files, named

OPERATING SYSTEM
Supports multiple languages (BASIC
resident)

Machine language accessibly
File management in operating system
Cursor control, reverse field, and
   graphics under simple BASIC control
Cassette file management from BASIC
True random number generation or
    pseudo random sequence

INPUT/OUTPUT
All other I/O supported through
   IEEE-488 instrument interface which    allows for multiple intelligent
   peripherals
All I/O automatically managed by
operating system software
Single character I/O with GET
   command
Easy screen line-edit capability
Flexible I/0 structure allows for BASIC
   expansion with intelligent peripherals

BASIC INTERPRETER
Expanded 8K BASIC', 20% faster
   than most other 8K BASICS
Upward expansion from current
   popular BASIC language
Strings, integers and multiple dimen-
   tion arrays
10 significant digits; floating point
   numbers
Direct memory access through PEEK
and POKE commands

2nd Oldest Known Promotional Brochure For The Commodore PET 2001
It appears to be rewrite of this brochure
Original brochure scans are available at the bottom of this page


	that can maintain inventories, keep payroll records, operate accounts payable and receivable, issue checks, handle correspondence. Again, some of these capabilities will involve hardware not yet available, but which should be ready fairly soon. The PET is a computer. But a very different computer from any you have ever seen before. The PET is a per- sonal computer; it stands for Personal Electronic Transactor. It is very com- pact, measuring just 16.5" wide by 18.5" deep and 14" high, and quite portable; it can be carried and used anywhere. It operates on ordinary current available in any office, home or factory. The PET has a television screen, a keyboard as simple to use as a type- writer and a self-contained cassette recorder which is the source for pro- grams and for storing data in con- nection with these programs. And it has, in its standard configuration, an 8K user memory. (This is in addition to the 14K operating system resident in the computer.) Although the PET is built to the highest standard in the industry, it may perhaps require service in its lifetime. You'll find the PET surpris- ingly easy to service. Modular com- ponents, standard TV circuitry and a basic cassette assure that a TV service- man with PET product knowledge will be able to render satisfactory ser- vice. Moreover, the self-diagnosing computer board will tell the service- man if it needs replacement. And Commodore will ultimately main- tain a network of Authorized Dealer service centers as well as its own service points. Because the PET is a personal com- puter, it uses BASIC language, the easiest to learn and simplest to pro- gram. So simple that many people without prior computer knowledge will find it surprisingly easy to begin rudimentary programming after only	a few hours and, with diligent appli- cation, could become quite facile. Because of the widespread use of BASIC, a large number of programs are already available from various sources, including PET user clubs springing up in many places. There is direct access to the machine language resident in the ROM through the keyboard so that-as one example -a particular POKE command will convert 26 graphic characters to lower case letters. The Commodore PET. So simple to learn and to use. Yet the PET can also boast of advanced screen editing -allowing complete and instant insertion, deletion, substitution of characters and full cursor movement. This is at the heart of the PET: It is a wonderfully simple device to master; really as easy to use as an advanced calculator. Yet it has the power and versatility of the most advanced computers. The PET is surprisingly inexpensive, as a personal computer should be. The PET is a product of Commo- dore, a company that has developed through the years a reputation for value and innovation in calculators and electronic watches. Quite portable, very affordable and unbelievably versatile, the PET com- puter may very will be a lifetime investment. Additional programs, additional memory boards and, through the IEEE Interface, a telephone interface system, a printer and a floppy disc drive are among the components that are being developed for those users who may perceive a need. A second cassette is already available through a built-in interface. An extra 8 bit user-controllable port is also built-in for "do-it-yourself" attachments ... such as a music synthesizer, speakers, a light con- troller ... for fun and games.
The PET ^TM home computer by Commodore is a creature of many faces, only a few of which you will see on the next page. As many faces as you see, the PET has even more. Its applications are limited only by the user's needs. The future of the PET is virtually unlimited; its present capabilities are already many and impressive. As a personal computer, the PET can teach languages and mathematics; play games; create graphic designs; answer the telephone, log calls, and dial numbers; store meal recipes and change number of portions; maintain budgets, personal records and check- books; operate appliances and tem- perature controls. Note: while the PET indeed has all these capabilities, some are not yet here: the phone capabilities will not become a reality until the modem hardware is completed. But that should be before the year is over. As a management tool, it delivers the information the executive needs, in the form he can use, and available to him alone. Trend analyses charts and graphs can be almost instantly available. The professional may use the PET for maintaining appointment sched- ules, recording income and expendi- tures and filing all the specialized information and forms he may need to make his work more efficient- from medical records for a doctor to income tax computations for an accountant. The engineer, mathematician, physi- cist has a tool far superior to the very best programmable calculators yet developed ... at a cost that is com- parable ... and with almost infinitely greater versatility. And the businessman has a computer


	The Many Faces of the PET

		PET and Peripherals. The external cassette (the PET CASSET™ model C2N) is shown con- nected to the cassette port and ready for file management. Also shown is the PET Printer, model 2020, capable of printing up to 80 characters per line on 8 ½” roll or fan-fold paper. It prints the entire complement of PET alphanumerics and graphics at approximately 120 CPS on a 7x8 dot matrix. The unit can be programmed to print extended characters as well as a unique character (such as a corporate logo).

commodore basic			CHR$ ASC CHR$ returns a character, given a numeric code. ASC returns a numeric code corresponding to a character. LEN Returns the length of a string. VAL STR$ Convert decimal values to numeric strings and vice-versa. Extended I/0 Statements OPEN CLOSE Control association of a logical file number to a physical device and, optionally, a file name on the device. SAVE LOAD VERIFY Store and retrieve a program, with optional file name, on a physical device. Load allows for program overlay, VERIFY compares contents of memory to stored program. PRINT# INPUT# GET# Allow communication with logical device numbers other than keyboard or screen. GET# inputs one character. CMD Permits communication with multiple devices simultaneously. Example of I/0 Operations Tape-to-tape file copy 10 OPEN 5,1,0, "OLD FILE" 20 OPEN 6,2,1, "NEW FILE" 30 INPUT#5,A$ 40 IF ST AND 64 GO TO 70 50 PRINT#6,A$ 60 GO TO 30 70 CLOSE 5 80 CLOSE 6 Program locates "OLD FILE" on tape #1, writes file header for "NEW F I LE" on tape #2, then copies tape #1 to #2 until it encounters an EOF on #1, and then writes an EOF on #2. Variables TYPES: Real Integer (%) String ($) NAMES: Variable names are uniquely given as a letter or a letter followed by a letter or a digit. Special Variables TI TI$ Time of day ST Status word for I/0 operations
	The fastest full floating-point BASIC imple- mented on a micro-computer. Allows communication directly from BASIC to IEEE-488 standard devices, cassettes, display, and keyboard built into PET Accurate built-in clock is settable and readable from BASIC in decimal or string value. Full command set, including: Standard Dartmouth BASIC Statements* LET READ PRINT DATA IF THEN FOR NEXT DIM END GOTO Extended BASIC Statements RESTORE REM GET GOSUB DEF RETURN STOP STEP INPUT FN ON ... GOTO ON ... GOSUB Scientific Functions SGN INT ABS SQR RND SIN COS TAN ATN LOG EXP pie Logical Operators AND OR NOT Operation Commands RUN NEW CLR LIST CONT FRE Formatting Functions TAB POS SPC Machine Level Statements PEEK POKE Allow the user to examine and store at specific memory locations. USR SYS Link BASIC to machine language subroutines with parameter passing or developmental subsystems. WAIT Monitors status of a memory location such as an I/0 port until specified bits are set. String Functions LEFT$ RIGHT$ MID$ Returns substrings (of specified length and position) of string acted upon. _____________ *Note: Arrays are currently limited to 255 elements.

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PET 2001 Brochure Original Scans