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  A handbook on the first day of joining a new internet company as BE engineer

When joining a new internet company, there might be lots of things need to be done to get ready for taking new challenges. These include both culture and tech preparation. in this post, we would focus on how to prepare the first day technically. The first thing to do is to get your laptop or your work machine up, these involves lots of tool setup and accesses. Normally there are three major task categories. Access As an engineer, there are lots of accesses needed to access different resources wi...

   TIPS,CAREER ADVICE,ONBOARDING     2021-12-11 21:32:10

  Do you really understand Geolocation?

LBS(Location based service) services continue to emerge, it seems that every product has some relationship with maps. But to be honest, do you really understand what is Geolocation? Not necessarily. Although lots of products have LBS service, they can be categorized as sign, search, navigation and information display, these are functional features of the map as a software should have. However, Geolocation is not software, it is just a functional feature, a functional feature of all LBS applicat...

   geolocation,app,significance     2012-10-22 12:11:41

  JavaScript interview questions

This post will cover the JavaScript questions I have encountered and have seen during my programming career. They will mainly focus on vanilla JavaScript though there are lots of excellent frameworks out there and many people are using them in their daily work. this keyword this keyword is an very important but easy to confuse concept in JavaScript since it is always referring to the calling object of the function. 1. What will be the output of below code snippet? function User(name) { this....

   JAVASCRIPT,ALGORITHM,THIS,CLOSURE     2019-03-09 07:05:46

  How does computer boot up?

The whole boot process of computer can be summarized in 4 phases. 1. BIOS In the 70's  read-only memory(ROM) was invented. The boot program is written into ROM, the first thing the computer does is to read and execute this program when it's powered on. The program in this chip is called "Basic Input/Output System" (BIOS). 1.1 Power-On Self-Test The BIOS will first check whether the computer hardware can fulfill the basic conditions for booting up, this process is called Power-On Self-Test...

   Computer, boot, partition     2013-02-23 23:19:47

  The mystery of Duqu Framework solved

The Quest for Identification In my previous blogpost about the Duqu Framework, I described one of the biggest remaining mysteries about Duqu – the oddities of the C&C communications module which appears to have been written in a different language than the rest of the Duqu code. As technical experts, we found this question very interesting and puzzling and we wanted to share it with the community. The feedback we received exceeded our wildest expectations. We got more than 200...

   Duqu,Code mystery,OO C,C++     2012-03-21 09:29:18

  Will tablet revolution really come soon?

The famous Silicon Valley entrepreneur and academic Vivek Wadhwa said a few months ago that tablet revolution would come only if the price dropped below $100. According to The Wall Street Journal, the 4th largest PC manufacturer Acer seems to be the first one to eat crab. It plans to promote $88 Android tablet Acer Iconia B1. Does this indicate that the tablet revolution is coming? According to a person who knows the Acer tablet project, Acer Iconia B1 configuration will be similar to those of ...

   Acer,Tablet,Low price,Tablet revolution     2012-12-24 20:51:33

  How Digital Technology is Transforming Healthcare?

Digitalization is the trendsetter for every industry. Healthcare has also been greatly influenced by digital technology. In fact technology has greatly improved the working of healthcare organization and in turn, outcomes of healthcare services have risen to new heights. This is not an overnight dream but result of immense hard work and efforts done by IT industry. The amalgamation of IT and healthcare has yielded a new era of healthcare that is quick and more reliable as compared to olden days...

   HEALTHCARE TECHNOLOGY,PATIENT MANAGEMENT SYSTEM     2017-05-05 04:09:33

  Optimization Tricks used by the Lockless Memory Allocator

With the releasing of the Lockless Memory Allocator under the GPL version 3.0 license, we can now discuss more of the optimization tricks used inside it. Many of these are things you wouldn't want to use in normal code. However, when speed is the ultimate goal, sometimes we need to break a few rules and use code that is a little sneaky.The SlabA slab is a well-known technique for allocating fixed size objects. For a given object size, a chunk of memory is divided up into smaller regions of that ...

   Optimization,Memory allocation     2011-11-16 08:02:16

  How GitHub Works: Hours are Bullshit

Frederick Winslow Taylor wrote the seminal analysis of management and efficiency in 1911 with The Principles of Scientific Management. He took the first scientific approach towards maximizing efficiency in manufacturing jobs. Time is money. Faster is better. More hours are better. Hours are bullshit Hours are great ways to determine productivity in many industries, but not ours. Working in a startup is a much different experience than working in a factory. You can’t throw more time at a...

   Work,Style,Time,Efficiency,Code,Enforcem     2011-08-19 07:42:32

  Today in history : Steve Wozniak invented Apple I in 1975

The original Apple Computer, also known retroactively as the Apple I, or Apple-1, is a personal computer invented by Steve Wozniak ion 29th June, 1975. Wozniak's friend Steve Jobs had the idea of selling the computer. Features:CPU : MCStek 6502CPU Speed : 1MHzBus Speed : 1MHzMemory : 8KbResolution : 60.05 Hz, 40*24 charactersPower : 58WPrice : $666.66The Apple I went on sale in July 1976 at a price of US$666.66, because Wozniak "liked repeating digits" and because they originally sold it to a lo...

   Apple I,History,Steve Wozniak     2012-06-29 06:00:08

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