Information and communication technology systems are widely used in modern shops and supermarkets. This is due to the growth of giant supermarkets spreading across the world and therefore it is no longer possible to keep track of stocks and sales without the help of ICT. Computer systems are used in various ways;• Stock control software• Maintaining constant temperature in refrigerators and freezers• Satellite tracking systems to monitor trucks making deliveries• CCTV to monitor incoming and outgoing customers• Electronic weighers• Epos systems• Computer network for connection from the store's stock control system to the head office Hardware for supermarkets Types of hardware in supermarkets: • CCTV cameras • Electronic weighing scales • EPOS systems • Computers • EFTPOS (Point of Sale for Electronic Funds Transfer) • Automatic Doors Computers There are rooms such as the systems office that contain several computers depending on the size and status of the supermarket. The payment computers are connected to the previously mentioned computers and are called "branch computers". Software such as "Control Systems" and "Stock Control" are used in these computers. A system office behind the scenes of a local store. Advantages and Disadvantages Having computers greatly benefits supermarkets as they make organization in supermarkets more efficient. They can run software to control the store's refrigerators and freezers and therefore must be extremely accurate as some foods must be stored at different temperatures. Dairy products and meat require temperatures just above zero degrees (2 – 4 degrees) while other foods, such as ice cream, must be kept below zero degrees. It makes everything easier for... half of paper... ms, viruses and trojans. Security software detects and destroys malware of this type before it enters the computer system. It can also repair files and systems if they are affected by a virus. However, software needs to be updated frequently as new viruses are constantly being created. Advantages • Free security software is available • Most free antivirus software comes with even advanced detection technologies • Free updates on free security software Disadvantages • Some security software cannot identify sophisticated malware • security can significantly slow down your computer's performance during scanning.Works Cited1. http://www.is4profit.com/business-advice/it-telecoms/payroll-software.html2. http://www.articledashboard.com/Article/Software---Advantage-and-Disadvantages-Of-Free-Antivirus-Software/741681