Video Collections about How Computers Works

I am teaching Computer Application Course (KOM201) this semester for first year Computer Science students in my university. Perhaps many of you raise a question about the existence of this course, given we are living in a modern world. It is valid reason to assume the students (especially computer science students) already know the application of computer. Right?

Not necessarily. As the matter of facts, several computer science courses, mainly in architectural level or operating system, will require deeper understanding around the working mechanism of computers (and most of the times, its history of improvements). Yes, almost all CS students familiar with hard drive, flash drive, or memory, but the knowledge their inner mechanism is varied.

So, I decided to collect several good videos that can be a good start to learn about this fascinating structure of this wonderful machine that makes our life far more interesting. If you want to contribute to this list, you can kindly told me via the comments below.

The Birth of the Computer

George Dyson gave us a brief history of computer.

What is (Quantum) Computer?

The first 2 minutes of this video is about computer in general, explained in a nutshell. If you confidence enough, you can continue watching to quantum computer. The Kurzgesagt composing very good song in this video.

How do Hard Drives Work?

This video will explained about how data stored in the hard drive. After you watched this video you will attend your hard drive more carefully.

How do GPS Work?

How the tiny chip in your smartphone can located you on Earth 24 hours a day?

What is The Internet and Who Invented It?

Although it is only spreading in early 90s, the Internet has a longer history than that.

Internet of Things

IoT is a hit and this video explained simply about how it can works.

A Day Made of Glass

A day made of glass is a good illustration of the ubiquity and pervasiveness of computer in the future. The unpacked version has an explanation about the possibility of using the mentioned technologies. Surprisingly, most of them already able to build, but it will be very expensive.

Some Trivia about Computer Screen

Another Resources

  • There are many TED speakers that give a talks about new trends in both hardware and algorithm in computer science.
  • HowStuffWorks published a good tour of computer components.
  • If you looking for more spesific information, you can visit Toms Hardware.

Capturing the Movement

IMG_0170_Monochrome 3__crop

I took this picture in a high school in Medan, North Sumatera, Indonesia. I was trying to capture their movement using long exposure (not so long as their movement is already fast :mrgreen: ). I messed up the white balance and forgot to took it in raw file, so I decided to convert them to grayscale image.

Behind the Scene:
Location: Saribudolok, Medan, North Sumatera
Gear: EOS550D, 18-135mm lens
Setting: f/16, 1/4s, ISO 100, no flash
Postprocessing: B+W, Photomatix Pro 5.1.1 (64-bit)

Afternoon in Toba


Toba is a very big and magnificent lake in Indonesia. It is almost impossible to snaps the entire lake in only one picture (except using satellite). I took this image in a hill near Tongging village (visible in the lower part). The village also offer very delicious fish and seafood. I postprocessing it to HDR image using Photomatix Pro.

Behind the Scene:
Location: Lake Toba, Tongging, North Sumatera
Gear: Canon EOS 550D, 18-135mm Lens
Setting: f/10, 1/400s, ISO 100, 29 mm, no flash
Postprocessing: Photomatix Pro 5.1.1 (64-bit)

ASUS ZenPower 10050 mAh

IMG_20150630_174645[1]Alhamdulillah dari keisengan mengisi formulir ASUS ZenExperience, blog ini mendapatkan kesempatan untuk mengulas tentang kemampuan ASUS ZenPower 10050 mAh. Setelah hampir dua pekan menggunakan powerbank tersebut, sekarang saatnya saya menunaikan kewajiban untuk mengulas produk ASUS yang satu ini :).

Kapasitas Daya

Kapasitas daya 10050 mAh yang ditawarkan sudah sangat mumpuni dan menggiurkan, terlebih bagi saya saya sebelum ini hanya menggunakan powerbank dengan kapasitas 3000 mAh. Saat ini, kebutuhan daya yang saya butuhkan untuk mengisi ulang ialah 2200 mAh untuk ponsel RedMi2 dan 4450 mAh untuk tablet Galaxy Tab 4 (total 6650 mAh). Kapasitas yang ditawarkan ini cukuplah untuk mengisi ulang kedua gadget tersebut selama perjalanan.

Ukuran dan Berat

Ukuran yang diklaim hanya sebesar kartu kredit bagi saya lebih berguna daripada kapasitas yang ditawarkan. Walaupun memang tebalnya tidak setipis kartu kredit :mrgreen:, ukuran tersebut cukup untuk masuk di kantong kemeja sehingga mudah dibawa ke mana-mana. Berat 215 gram pun masih bisa ditolerir untuk dibawa dengan nyaman tanpa merasa terganggu.

Kemasan Kelengkapan

ASUS ZenPower dikemas dalam kemasan kotak sederhana yang di bagian belakangnya ditempeli dengan kartu jaminan. Akibatnya, bagian belakang kemasan yang berisi spesifikasi menjadi sulit untuk dilihat. Mengapa kartu tersebut tidak dimasukkan saja ke dalam kotak?

Setelah membuka kemasan, yang saya peroleh adalah powerbank itu sendiri dan sebuah kabel daya sepanjang 15 cm, tanpa adaptor. Hmm.

Saya tidak terlalu bermasalah dengan ketiadaan adaptor karena masih bisa dimaklumi. Tentunya pengguna yang memiliki ponsel kemungkinan besar memiliki adaptor :mrgreen:. Walaupun pada awalnya saya mempermasalahkan kabel yang sangat pendek, kelamaan saya menjadi nyaman dengan panjang kabel tersebut. Tidak perlu ribet digulung :).

Sayangnya, untuk kapasitas yang besar ini, ASUS ZenPower hanya menyediakan satu slot USB sehingga ia hanya dapat mengisi daya satu perangkat dalam satu waktu :(.

Design and Experience

Desain ASUS ZenPower, yang mengikuti prinsip, Zen minimalis tapi cantik dan elegan. Warna perak dan putih nyaman di mata. Akan tetapi, ada satu masalah yang saya temukan dengan jenis bahan yang digunakan. Bahannya licin sehingga saya sempat menjatuhkan powerbank ini :(.

Terakhir, bagi saya lampu daya yang menyala ketika proses pengisian berlangsung tidak perlu dibuat kedap-kedip.


Harga yang hanya Rp 299.000,- (menurut JakartaNotebook) sudah cukup terjangkau dengan kapasitas yang ditawarkan.


Walaupun saat ini kapasitas 10050 mAh bukan sesuatu yang luar biasa (coba cek artikel ini), ASUS ZenPower unggul dalam hal ukuran yang kecil sehingga mudah dibawa.

Posted in Uncategorized

Printed vs Electronic Books


I always fond of books, as you can see from soo many book reviews that I have written in this blog. However, the latest changes in book-selling business in Indonesia started to change my habbits. Two notable changes are the Google Book and Telkomsel Billing Service. This enables me to just download the book from the Net legally.

What you preferes, buying printed or electronic book? As for me, there are some cases where I prefer to buy printed on. I tries to summarize it as follows:

When to Buy Printed Books

  • A reference book that included many technical or mathematical details. I found myself not fond of reading such books even in my Tab.
  • Photography or design books. Well, I have to admit that this kind of books are more enjoyable to displayed in my office or bookshelves.
  • When you get a money :mrgreen:. Yes, printed book cost more. Softcover or paperback version durability are low so I prefer the hardcover one when buying books, which are, sadly, more expensive.
  • Magazine.

When to Buy Electronics Books

  • Novel. Well, there are not many novel that I read more than once (I even don’t bother to read some of them *sigh*). So why I have to buy it just to makes my bookshelves more cramed?
  • Chicken soup style books.
  • Books with small amount of picture.
  • When you found your pocket is sort of cash :mrgreem:

Posted from my phone

Posted in Uncategorized

What to do when burnout comes?


In this current semester, my workload are unusually high. In the last three months I often work from early morning and finished late night. I teach so many classes (On average, I teach 10 classes a week. In one particular busy week I had to teach 20 of them!). I also do two research project and have to supervises ten students. Some of them are ‘unique’ so I have to gave them more attention.

At the first month of the semester, I was fine. I am able to cope with all the job. However, in the past week, I found something wrong with my body and mind. I, strangely, don’t really care anymore about some of my job. I was very tired and sleep is not enough to vanquish it. I found my creativity dropped and my concentration is worse than ever. So, I decided to find out what is wrong with me on the Internet. And..

I think I am burned out.

Before we talk more about burnout, let we look at some definition of burnout:

Burnout is a psychological term that refers to long-term exhaustion and diminished interest in work. Burnout has been assumed to result from chronic occupational stress (e.g., work overload). – Wikipedia

There are many signs of burnout, some of them are:

  • Negative attitude and thinking
  • Feeling hopeless
  • Lack of concentration
  • Apathy towards your work, chores, and other tasks. Simple case: ignoring your mess and daily routine.
  • Feelings of stagnation.
  • A lack of interest in social activities.
  • Unhealthy eating and exercise habbit.
  • Feeling like you’re never doing enough.
  • Neglecting your own need.
  • Putting the needs of others ahead of your own.
  • Personal values and beliefs lose their importance.
  • Short temper.
  • Constant exhaustion.
  • Feelings of inefficacy.
  • Feelings of detachment from what you care about.
  • Boredom.
  • Psychosomatic complaints, such as headaches, lingering colds, and other issues with a cause that’s difficult to identify.
  • The denial of these feelings. (At least I doesn’t have the last syndrome :mrgreen:. )

So, what you do when you feels like this? Perhaps I will take a little break and reassess my life goals and hang out with my friends and family (I rarely saw them this semester).

Related Links:
LifeHacker: Burnout is Real
Forbes: Signs You are Burning Out
MindTools: Recovering from Burnout

Posted in UncategorizedTagged