Date:27.02.2017, 16:36 The hardware interfaces to microcontroller are LCD display, GSM modem and GPS Receiver. The design uses RS-232 protocol for serial communication between the modems and the microcontroller. A serial driver IC is used for converting TTL voltage levels to RS-232 voltage levels. AT89S52 microcontroller is used to interface serially with a GSM Modem and a GPS receiver. GPS modem continuously generates data on longitude and latitude of vehicle of which NMEA data is displayed on LCD screen and send to mobile at other end from where the position of vehicle is demanded (an EEPROM is used to store mobile number). The additional components of the GSM architecture comprise of databases and messaging systems functions: Home Location Register (HLR) Visitor Location Register (VLR) Equipment Identity Register (EIR) Authentication Center (AuC) SMS Serving Center (SMS SC) Gateway MSC (GMSC ) Chargeback Center (CBC) Transcoder and Adaptation Unit (TRAU ) The following diagram shows the GSM network along with the added elements: The. I was involved in Database requirement mapping and testing of the Application's Database I played a key role in designing and managing the Database for Patient Management, Medical Case and Discount Policy I was also involved with the testing of Data Base Quality Assurance Actively involved with Quality Testing for the product End to end functionality testing and bug reporting. The product is a healthcare solution which connects remote places with urban hubs using multiple channels like Phone, Internet and SMS. As part of the involvement with this project, I've mostly gained exposure in functional design and requirement gathering for an Application Development, Quality Assurance, PHP coding Database Management.
In this story, the man's actions go hand in hand with his words, to make him desired by some, feared and hated by others. tags: Ralph Ellison Invisible Man Essays 1750 words (5 pages) Powerful Essays preview Life in Oklahoma City by Ralph Ellison - Life in Oklahoma City by Ralph Ellison The author Ralph Ellison is a renowned.