SMALL ELECTRONIC APPARATUS

PROBLEM TO BE SOLVED: To improve the replacing property when a coin battery is replaced by providing a specific structure in a small electronic apparatus provided with a tablet plate, a display, a control substrate, and the coin battery. SOLUTION: This small electronic apparatus is provided with a tablet plate 1 inputted with desired characters, a liquid crystal display 3 displaying the input information and compiled result, a control substrate 7 having a memory temporarily storing the characters inputted from an input section and storing a system program, and a backup coin battery 8. A battery extraction section 17 is formed on a battery cover 14 covering the coin battery 8 in this electronic apparatus. The battery cover 14 is rotated clockwise to be inserted into the battery fitting hole 13 of a lower case 5, and the cover 14 is rotated counterclockwise to be removed. When the battery extraction section 17 is fitted in between the lower case 5 and the battery 8, the battery 8 is moved in the right direction, and it is jumped up when the engagement of a fixing piece 12 is released.