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Texas Instruments SR-52

Date of introduction:	September 16, 1975	Display technology:	LED-stick
New price:	$395.00, DM 1199.00	Display size:	10 + 2
Size:	6.5" x 3.2" x 1.8"
Weight:	12.6 ounces	Serial No:	49362
Batteries:	BP1A	Date of manufacture:	wk 10 year 1976
AC-Adapter:	AC9130A or DC9105	Origin of manufacture:	USA
Precision:	12	Integrated circuits:	TMC0501, TMC0524, TMC0595, 2TMC0599, 2TMC0561/0562
Memories:	20
Program steps:	224	Courtesy of:	Joerg Woerner
		Download manual:	(US: 2.589 kB)

If you call the SR-52 a pocket calculator you need really huge pockets. Introduced in fall 1975 this charmful calculator integrated a card reader for magnetic strips, a huge memory for 224 steps and the revolutionary AOS entry into a housing similar to the SR-50A calculator. By the way, the SR-52 was the thickest calculator ever with a whooping 1.8". Together with the calculator a "Printed Craddle" PC-100 was introduced, a thermal printer and plotter which secured the SR-52. Remember the year 1975, a SRP of $395 was no bargain. The SR-52 was clearly placed against the Hewlett-Packard HP-65, later the HP-67 got identical memory space to the SR-52.

The SR-52 was a milestone in the history of programmable calculators, it took only 2 years until the introduction of the legendary TI-59.

Don't miss the secrets of the SR-52 and get some Undocumented Features.

A similar calculator was sold with the huge desktop-model SR-60. The SR-56 lacked the magnetic card reader.

Compared with earlier scientific models like the SR-51 the calculating precision was reduced. If you are interested in the calculating accuracy of scientific calculators don't miss the Calculator forensics.

If you are interested in "huge pocket calculators" you should view the Canon Palmtronic F-7.

AOS™ is a trademark of Texas Instruments.

If you have additions to the above article please email: joerg@datamath.org.