22-03-2012, 11:41 AM
Automation System
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INTRODUCTION
1.1 Project Overview
A fingerprint is an impression of the friction ridges on all parts of the finger. A friction ridge is a raised portion of the epidermis on the palmer (palm) or digits (fingers and toes) or plantar (sole) skin, consisting of one or more connected ridge units of friction ridge skin. These are sometimes known as "epidermal ridges" which are caused by the underlying interface between the dermal papillae of the dermis and the interpapillary (rete) pegs of the epidermis. These epidermal ridges serve to amplify vibrations triggered when fingertips brush across an uneven surface, better transmitting the signals to sensory nerves involved in fine texture perception. The ridges do not assist in gripping objects, sometimes in fact reducing grip to as much as 30% compared to completely smooth finger pads.
Fingerprints may be deposited in natural secretions from the eccrine glands present in friction ridge skin (secretions consisting primarily of water) or they may be made by ink or other contaminants transferred from the peaks of friction skin ridges to a relatively smooth surface such as a fingerprint card. The term fingerprint normally refers to impressions transferred from the pad on the last joint of fingers and thumbs, though fingerprint cards also typically record portions of lower joint areas of the fingers (which are also used to make identifications).
1.2 Problem Description
In past years a time monitoring system is utilized by many companies that pay their employees on an hourly basis. These systems help a company keep track of the hours that their employees work. There are a number of different systems that a company can use to keep track of an employee's time.
• Time Clock
A time clock consists of a clock and a time stamping device. Employees insert a card into this device when they arrive at work to "punch in," or receive an ink stamp indicating the time. When the employee leaves work, they insert the same card into the device to make an ink stamp that indicates the time they left. Employees keep this card throughout a pay cycle. Once the pay cycle ends, the card is given to the company's payroll division so that clerks in the division can calculate the employee's time and pay the employees accordingly.
• Software
Time clock software performs a similar function as a physical time clock. Employees who use time clock software log into the software using their personal password. The software records the time that they log in. When an employee is ready to leave work for the day, they log out of the software. A company's human resource or payroll division can keep track of all employees using the software, and can even import the data into spreadsheets or graphs to keep track of individual employee work patterns or total hours worked by all employees for scheduling purposes.
• Activity Monitoring
Companies with employees who work on computers and the Internet sometimes find that their employees use their computers for personal activity at work. Although some companies resolve this by blocking certain websites, others install activity monitoring software. Activity monitoring software records websites that employees visit, how much time they spend at each website and what time of day they go to these websites. The software also records keystrokes so that instant messaging, emails and web chats are recorded. Often, employee productivity will improve and employees will self-monitor if they know that the software is installed on their computer.