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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Datexx DF-551, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Datexx DF-551 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Datexx DF-551. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Datexx DF-551 should contain:
- informations concerning technical data of Datexx DF-551
- name of the manufacturer and a year of construction of the Datexx DF-551 item
- rules of operation, control and maintenance of the Datexx DF-551 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Datexx DF-551 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Datexx DF-551, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Datexx service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Datexx DF-551.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Datexx DF-551 item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
Operation Manual W orld Time L CD Clock, w/ Built-in 10 Digit, Desktop Calculat or W orld Time—16 Cities! DENVER, CHICAGO , NEW Y ORK, SAN JU AN, SYDNEY , ANCHOR A GE, HONOL UL U, L OS ANGELES, KARACHI, HONG K ONG, T OKY O , LONDON, P ARIS, JERUSALEM, MOSC OW , MY ZONE . 10 Digit Calculator Calendar Large Digit Clock w/ Musical Alarm Curr ency Co[...]
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Page 2
Setting custom time zone (MY Z ONE) F or those of us who are not close to one of the 16 major key cities listed on this unit, Datexx has provided the MY Z ONE k ey , which may be customized to your local time and is not aff ected by automatic Daylight Sa vings Time adjustments. If DST is desired, this adjustment may be made manually . MY ZONE is th[...]
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Page 3
Pr ofit Analysis Example1: If the cost is $19.95 and selling Price is $39.90, what is the profit margin (%)? Pr ess [1][9][.][9][5] [COST ] [3][9][.][9] [SELL] Pr ofit% =50 Example2: If the selling price is $20 and profit margin needs to be 50%, how much the cost should be? Pr ess [2][0] [SELL] [5][0] [Profit%] Cost=10 Example3: If the cost is $69.[...]
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Page 4
W ar ning: (Keep batteries out of the reach of children) Reset F eature If at any time the Calcula tor or Clock freezes , T urn calculator ov er and locate the reset butt on on the bottom. Use an opened paper clip to push the button. ( The actual button is located inside the cover). This will reset all functions. Care and Maintenanc e Keep the calc[...]