Collection Item |
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Burroughs C3260
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| Brand: | Burroughs. |
| Model: | C3260. |
| Origin: | Japan. |
| Introduction: | 1971. |
| Type: | Big basic desktop calculator. |
| Functions: | 4-Basic function, add-only memory and 16 digit result mode for multiplication and division, no constant. |
| Display: | 8 digit + Sign individual big Itron tubes. |
| Keyboard: | 17 reed-switch keys, Mem/16 digit mode, Clear Memory and ON/OFF switch. |
| Main chips: | Rockwell NRD2256, DC1152, ACM1156, AU2271C and Hitachi HD3113P with date codes Oct/70, Feb/71, Mar/71, Mar/71 and Feb/71, respectively, very early!. |
| Logic comments: | Based on the Sharp EL-160
architecture with slight differences on the keyboard layout, but functionally identical. First implementation of LSI technology in a calculator with 4 chips manufactured by Rockwell but
designed by Sharp, each counting 1875 electronic components. Also used in Sharp EL-8, Sharp QT-8B, Sharp QT-8D and other OEM versions. Keyboard has an unusual layout in order to
minimize the key count. Key description: 0-9 and point: Numerals and decimal point keys. ÷X (Divide-Multiply): Use to divide or multiply if you complete the operation with := or += respectively, see examples below. += (Add-Multiply): Use to add or complete a multiplication. := (Substract-Divide): Use to subtract or complete a division. C (Clear): Clears the calculator or return from the memory content. Diamond key: Shows the memory register or the 8 right digits in a multiplication or division exceding 8 digits, depending on the Mem/16 switch. Black + (Memory add): Adds to memory register, only if Mem/16 is in "Mem" position. In "16" position has no function. Mem/16 (Memory mode): Switchs between memory mode and 16 digit mode for multiplication and division. CM (Clear memory sliding switch): Clears the memory register. Simple operation examples: a) To compute 2+3 enter 2 += 3 += b) To compute 2-3 enter 2 += 3 := c) To compute 2*3 enter 2 ÷X 3 += d) To compute 2/3 enter 2 ÷X 3 := You can read a complete article about the Burroughs C3260 here, from OldCalculatorMuseum.com. |
| Remarks: | Very robust and heavy construction, big Itron display, very clear and readable, no battery support. |
| Size: | 9.84 x 6.10 x 3.35 in, 250 x 155 x 85 mm. |
| Condition: | (9.9/10) Immaculate, better than you can see in this pictures, working. |
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