【導(dǎo)讀】計(jì)算工具的認(rèn)識(shí)。顯示屏。開(kāi)關(guān)及清屏鍵。清除鍵。時(shí)間鍵。日期鍵。存儲(chǔ)運(yùn)算鍵。括號(hào)鍵。數(shù)字鍵。運(yùn)算符號(hào)鍵。等號(hào)鍵。小數(shù)點(diǎn)鍵。時(shí)間鍵。日期鍵。存儲(chǔ)運(yùn)算鍵。數(shù)字鍵。小數(shù)點(diǎn)鍵。顯示屏。清除鍵。開(kāi)關(guān)及清屏鍵。括號(hào)鍵。運(yùn)算符號(hào)鍵。等號(hào)鍵