Android System Introduction (top): Historical origins

Last month, I saw a series of articles about the originator of Linux-Linus's biography, "Just for Fun", whose human gadget can be very interesting in the course of his life, and deserves to be savored by every programmer.

In fact, for me, although software development for many years, but very unfamiliar with Linux, just heard a few nouns. Not used Linux? Almost impossible, 80% of the world's smartphones are running Android, and as long as you've used Android, you've been using Linux indirectly because they have deep roots and stories. The following 3 articles on the history of Android, architecture, the principle of a brief, for everyone to eat.

• Android System Introduction (top): Historical origins
• Android System Introduction (middle): System architecture
• Introduction to Android System (bottom): Operating principle

Android System Introduction (top): Historical origins

Launched in October 2003, Android Inc aims to develop a free, open-source mobile operating system that is customizable, lightweight, and adaptive. Although an angel invested $10,000, it was a drop in the bucket for such a big blueprint, and the founders were sneaking around in the rough.

In 2005, a chance to change the world was met, and Google acquired it in August. So, with funding and technology injected, the team began a complete refactoring: rewriting the Android architecture based on the Linux kernel-actually modifying the Linux system for use with hardware drivers.

June 29, 2007, another event that changed the world, the iphone went public. Overnight, Apple suddenly became the upstart of mobile phone, and achieved great success. At the same time, mobile communications equipment vendors to Apple and love and hate, Love is Apple opened a new era of smartphones to bring huge business opportunities, hate is Apple's iOS is a closed system. So a short 4 months later, Google-led, the global Open Mobile Phone Alliance (open handset Alliance) and November 5 announced the formation of Android officially boarded the historical stage. A week later, the November 12, 2007 Android Beta SDK was released. A year later, the first Android-based smartphone was officially sold in October 2008 by HTC, so the mobile market entered a win-time era for iOS and Android.

The Android system is open source and maintained by Google, based on the Apache 2.0 Open source protocol. Use a picture to see the history of Android in a clear way:

• Android Alpha (1.0)
• Android Beta (1.1)
• Cupcake (1.5)
• Doughnut (1.6)
• Eclair (2.0–2.1)
• Froyo (2.2–2.2.3) "I personally bought in February 2011 in Beijing, parallel HTC G7, has been retired for 3 years"
• Gingerbread (2.3–2.3.7)
• Honeycomb (3.0–3.2.6)
• Ice Cream Sandwich (4.0–4.0.4)
• Jelly Bean (4.1–4.3.1)
• KitKat (4.4–4.4.4)
• L Release (Developer Preview)

2014, with the android Auto,android TV,android Wear System SDK released successively, Since the launch of the Android SDK in 2008, a new round of savage growth has begun ...