Toshiba Corp, Japan's biggest chip maker, booked a 72 percent fall in quarterly operating profit and cut its annual profit forecast as a strong yen and a weak global economy hit profits at the industrial electronics conglomerate.

Flooding in Thailand also hit quarterly earnings after it forced the company to halt some of its manufacturing lines.

Toshiba, the world's number two maker of flash memory chips behind Samsung Electronics and a supplier to Apple, cut its annual operating profit forecast to JPY200 billion (USD2.62b) from JPY300b for the year to March. That was below the JPY275b consensus estimate of 23 analysts polled by ThomsonReuters I/B/E/S.