User manual LEXIBOOK PLC241

[. . . ] Calculations using memory Before saving a new value to the memory, the content must first be deleted by pressing the 'MRC' key twice and then pressing the 'AC' key to delete all previous calculations. To add a value to the memory, enter the chosen number or calculation and then press the 'M+' key. To deduct a value from the memory, enter the chosen number or calculation, and then press the "M-" key. The number entered (or the result of the calculation) is deducted from the value stored in the memory. [. . . ] the AC key clears all entries and the memory. Also use the AC key to turn on your calculator. The key allows you to get the square root of the number you entered. The % key allows you to perform operations with percentage values. M+/M-/MRC - Memory operation keys +TAX/-TAX/RATE - these keys are used to perform operations using a tax rate set by the user. Then, press the "RATE" key, followed by "+TAX" to confirm. Follow the same procedure if you wish to change the rate later on. Before using this calculator for the first time, remove the static label from the LCD screen. In order to delete the error message and any other calculations, press "AC". To replace the battery, open the battery compartment at the back of the unit using a coin. Insert a new battery and close back the battery compartment. Automatic switch off: If no key is pressed, the calculator will switch itself off automatically after approximately 6 minutes. Abnormal Conditions If this calculator is exposed to a powerful external electric field or shock during use, an abnormal condition may occur in which all the keys, including AC, do not function. In this case, press the RESET switch on the back of the calculator. Note that the memory contents will be completely cleared when this operation is performed. Press the RESET switch only in the following cases: After replacing the batteries. When an abnormal condition occurs and all keys are inoperative. Handling precautions Your calculator contains precision components, never attempt to take it apart. - Take care not to drop your calculator or allow it to receive any other impacts. - Do not leave your equipment in areas exposed to dampness, dirt, dust or high temperatures. [. . . ] Our warranty covers material or installation-related defects attributable to the manufacturer, with the exception of wear caused by failure to respect the instructions for use or any unauthorised work on the equipment (such as dismantling, exposure to heat or damp etc). Note: It is recommended that all packaging be kept for future reference. Keep this instruction manual in a safe place as it contains important information. In our constant concern for improvement, the colours and details of the product may differ slightly from those shown on the packaging. [. . . ]