Posts

COA

  BCD (Binary Coded Decimal) Definition: BCD is a numeric representation where each decimal digit (0–9) is represented separately in binary form (4 bits). Examples: ·          Decimal 5 → 0101 (in BCD) ·          Decimal 27 → o     2 → 0010 o     7 → 0111 o     So, 0010 0111 ·          Decimal 93 → o     9 → 1001 o     3 → 0011 o     So, 1001 0011 Types of BCD: 1.       8421 BCD (most common) – weights are 8,4,2,1 Example: 7 → 0111 (4+2+1=7) Advantages of BCD: ·          Easy conversion between decimal and binary. ·          Useful in financial/decimal calculations (ATM, calculators). Disadvantages of BCD: ·  ...
Post a Comment
Read more

WMA

  Introduce iOS iOS is a mobile operating system developed by Apple Inc. It powers devices like the iPhone , iPad (until 2019), and iPod Touch . It is known for its user-friendly interface , high security , and smooth performance .   It was first released in 2007 with the launch of the first iPhone .   iOS is a closed-source platform, meaning only Apple can modify and distribute it.   4.2 History of iOS Year Version Key Milestone 2007 iOS 1 Released with the first iPhone (no App Store yet). 2008 iOS 2 Introduced App Store. 2009 iOS 3 Added copy-paste, MMS, and Spotlight search. 2010 iOS 4 Introduced multitasking and FaceTime. 2011 iOS 5 iCloud, Notification Center, iMessage added. 2012 iOS 6 Apple Maps and Pas...
Post a Comment
Read more