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Showing posts from December, 2016

How The Computer Displays Correct Time When Turned On After Years?

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I t was once when I was in 7th grade. I turned on my desktop computer after almost a year. I glanced at the screen a few moments after the PC booted and I was surprised to know it displayed correct date and time after a year of no operation. Also, the computer wasn’t connected to the internet as I forgot to turn on the router so that it could sync the time. To satisfy my curiosity, I researched on the web and came to know that there is a semiconductor chip present on the motherboard which is assigned the job of keeping a note of the time when the computer disconnects from the power source. THE RTC CHIP REMEMBERS THE DATE AND TIME. This timekeeper chip is called the Real-time Clock (RTC) or the CMOS ( Complementary Metal-oxide Semiconductor) chip. The CMOS chip (known as CMOS RAM) is a memory which also stores the BIOS information of the computer. And it is a volatile memory, that’s why It is driven by a low voltage battery having a life of around five to ten years. On deskt

Software Testing and an Overview of Its Types

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Computers, software programs, and information technology tools and services have become an integral part of our lives. From personal communication and transportation to conduct of business and commercial activities, there is virtually no aspect of modern society that does not involve information technology. In such a scenario, a malfunctioning or buggy software application can have a significant impact on our personal and professional activities. This is why software testing has become an integral and important component of the development process. Software testing refers to the process of ensuring the application does what it was designed to do in an efficient and functional manner. Even program that does not have any bugs requires testing to ensure that it achieves its ultimate objective as specified by the client. The testing process ensures that the software program does not cause unintended consequences like system crashes, along with making sure the ultimate purpose of th