DESIGN AND IMPLEMENTATION OF PHONE BILLING SYSTEM
CHAPTER ONE 1.0 INTRODUCTION In some years back many operation were carried out manually. The method used to prepare bills was manual which possibly give room for fraud. Recently, computer came into an existence so as to solve many problem that may arise as a result or using manual and reduce the time consuming in handling complex or voluminous tasks. Computer is used as an extremely versatile way of aiding the understanding ...
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