チェコ共和国からのお手紙 ～単3電池2本で30年以上動く電卓～先日、チェコ共和国のお客さまからお手紙をいただきました。 Ladies and gentlemen, Let me to greet you and all personnel of SHARP Co Ltd. as well. I’m writing from Eastern part of Bohemia, the Czech Republic, Europe. So about in the year 1984, when spending my holiday in Hungary, there I bought a calculator trade mark ELSIMATE EL-230. I assumed that I will employ this product maybe 5 or 10 years. But I am very surprised and deli
