Moreover, two large outlets are there at the Banani and Uttara locations in Dhaka. The largest store of Ryans is in Agrabad, Chattogram which is the largest computer store in Bangladesh. In Chattogram Ryans has another store at Younesco City Centre, GEC Circle. Ryans Khulna branch is the largest computer store in the Khulna division. Branches in Rangpur, Rajshahi, Bogura, Barishal, and Mymensingh districts are also providing the same quality product and service just like the branches from Dhaka. 123/5 BCS Computer City, Agargaon Dhaka. 41 Kamal Ataturk Avenue, Dhaka. 36 Sonargaon Janapath, Dhaka. 69/71 New Elephant Road, Dhaka. 69/71 New Elephant Road, Dhaka. 69/71 New Elephant Road, Dhaka. Level 4, Shop 441, Eastern Plus, Dhaka. 472 Sheikh Mujib Road, Chattogram. Naushin Tower, 11 KDA Avenue. 3/7 Jamal Super Market, 97 Shaheb Bazar. 624 Asha Centre, GL Roy Road. 936 College Road, Kalitola. 125 Sadar Road, Kakolimor. 11 C.K Ghosh Road.
How are the bytes in persistent storage organized? Bytes on a flash drive? The hard drive or flash drive provides persistent storage as a flat area of bytes without much structure. Typically the hard disk or flash disk is formatted with a "file system" which organizes the bytes into the familiar pattern of files and directories, where each file and directory has a somewhat useful name like "resume.txt". When you connect the drive to a computer, the computer presents the drive's file system to the user, allowing them open files, move file around, etc. Essentially, each file in the file system refers to a block of bytes, so the "flowers.jpg" name refers to a block of 48KB of bytes which are the data of that image. The file system in effect gives the user a name (and probably an icon) for a block of data bytes, and allows the user to perform operations on that data, like move it or copy it or open it with a program.
Thus, at the end of the 17th century, Napoleon commissioned Gaspard de Prony (22 July 1755 - 29 July 1839) with the revolutionary task of producing the most precise logarithmic and trigonometric tables (with between 14 and 29 decimal places) ever made, in order to refine and facilitate the astronomical calculations of the Paris Observatory, and to be able to unify all the measurements made by the French administration. For this colossal task, de Prony had the brilliant idea of dividing the most complex calculations into simpler mathematical operations that could be performed by less qualified human computers. This way of speeding up the work and avoiding errors was one of the things that inspired English polymath Charles Babbage (26 December 1791 - 18 October 1871) to take the next step: replacing human computers with machines. Babbage is considered by many to be the father of computing because of that vision, which never really came true by his efforts.
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