General Coding

The evolution in hardware, software, and communication made the ground for evolving mobile phones from just portable phones to smartphones. These days, purchasing a mobile is a little bit confusing because of the number of brands, models, technologies, and requirements. What are the things that make a mobile phones into smartphones? Basically every mobile phone has a CPU, an input/output mechanism, display, speakers, and battery. What makes the mobile phone dearer to people or unavoidable in daily life? Everybody uses a smart phone, and they use it to accomplish certain purposes, most commonly communication and file sharing. For some users, purposes are more than the common ones, and some only need a very little of what is available. So to fulfill the requirements, a variety of models with low-end to high-end configurations are available. Choosing a suitable device is not difficult, but quality-wise, it is a little complicated. Knowing something about it certainly helps resolve conf...

Booting is a process of loading Operating System(OS) to primary storage(usually Random Access Memory[RAM]), and readying a computer system for use. This process is carried out using a firmware which loads a small program from a special region in in hard disc,floppy disk, optical disc or other storage devices. This region is known as Boot Sector. Boot sector is a first sector on a disk which contains boot record(a machine code) which is loaded into RAM by ROM(BIOS) firmware which in turn loads OS/start-up program into RAM to make the computer into a meaningful machine. There are mainly two types of boot sector: Master Boot Record(MBR): For partitioned storage device MBR is the first sector. Hard disk drives Volume Boot Record(VBR): For non-partitioned storage device VBR is the first sector. Floppy disk, USB flash drive. BIOS does not know about MBR or VBR it simply looks for the first sector of the storage device. VBR which holds the code for booting invoked either directly by ...