![Brother 201 Calculator](https://vintage-calculator.com/wp-content/uploads/2023/10/brother201.jpg)
The Brother 201 is a mid-1970s handheld calculator measuring 88mm x 153mm x 33mm and weighing 184g without batteries. It has a sturdy two-piece white plastic case with a flat bottom and rounded top. The keyboard has a brushed aluminum surround matching the display panels, one printed with the model identifier. The angled blue vacuum fluorescent 8-digit display also features digit and sign reminders.
![](https://vintage-calculator.com/wp-content/uploads/2023/10/bro202s.jpg)
Power comes from 4 AA batteries providing 6V DC or optionally an AC adapter plugging into the side. Current draw is 60mA. The battery compartment has a ribbon pull tab for easy changes.
The 201 offers standard math functions – add, subtract, multiply, divide – along with percentages, square root, sign change and a two register memory. Overflow is suppressed and full 8-digit negative results are shown via a dedicated sign digit. However error conditions like divide by zero are not recoverable beyond clearing. Low battery indication and an automatic power saving mode are provided.
![](https://vintage-calculator.com/wp-content/uploads/2023/10/brother201i.jpg)
Internally the logic runs on a NEC μPD276C microprocessor with peripheral transistors, diodes, resistors and other supporting components. The keyboard connects via ribbon cable for easy servicing. Build quality is very good with a solid feel and nice display. The 201 balances functionality, robustness and quality in a mid-range offering of its era.