The Difference Between Image Dimensions and Image Resolution?

Dimension refers to the actual measurement of the picture. Its width and height. This is measured in pixels, inches or cm.
The resolution of an image refers to the pixel density. It measures how many pixels there are per inch (or cm) of space on the picture.
If the picture is 200 pixels wide and it is also 2 inches wide, it would have a pixel resolution of 100 pixels per inch (ppi)
https://answers.yahoo.com/question/index?qid=20101122140629AAqZFMB

The differences between the iPhone 6 and iPhone 6 Plus and the earlier iPhone 5, iPhone 5c, and iPhone 5s

Reference:
http://www.everymac.com/systems/apple/iphone/iphone-faq/differences-between-iphone-5-5c-5s-iphone-6-6-plus.html
http://www.redmondpie.com/iphone-6s-plus-vs-6s-vs-iphone-6-plus-vs-6-vs-5s-specs-comparison/
http://www.gizmag.com/iphone-comparison-2015-2016/39467/ 
http://www.macworld.co.uk/review/iphone/iphone-6s-vs-iphone-5s-comparison-3628130/




Photo Credit: Apple, Inc. (iPhone 5s, iPhone 6, & iPhone 6 Plus)

iPhone 5/5c/5s & iPhone 6/6 Plus Comparison Chart

These differences -- design, biometrics, displays, durability, cameras, identifiers, connectivity, processor, and storage -- along with US pricing information is summarized below:

	5	5c	5s	6	6 Plus
Introduced:	Sep 2012	Sep 2013	Sep 2013	Sep 2014	Sep 2014
Discontinued:	Sep 2013	Sep 2015	Current	Current	Current
Clockspeed:	1.3 GHz	1.3 GHz	1.3 GHz	1.4 GHz	1.4 GHz
Processor:	Apple A6	Apple A6	Apple A7	Apple A8	Apple A8
Architecture:	32-Bit	32-Bit	64-Bit	64-Bit	64-Bit
Coprocessor:	None	None	M7 Motion	M8 Motion	M8 Motion
RAM:	1 GB	1 GB	1 GB	1 GB	1 GB
Orig. Storage (GB):	16/32/64	8/16/32	16/32/64	16/64/128	16/64/128
Current Storage (GB):	N/A	N/A	16/32	16/64	16/64
Battery Life (Hours):	8-40	8-40	8-40	10-50	12-80
Display Size:	4"	4"	4"	4.7"	5.5"
Resolution:	1136x640	1136x640	1136x640	1334x750	1920x1080
Pixel Density:	326 ppi	326 ppi	326 ppi	326 ppi	401 ppi
Contrast Ratio:	800:1	800:1	800:1	1400:1	1300:1
Dual Domain Pixels:	No	No	No	Yes	Yes
3G Internet:	Yes	Yes	Yes	Yes	Yes
4G/LTE Internet:	Most	Most	Most	Yes	Yes
Wi-Fi (802.11):	a/b/g/n	a/b/g/n	a/b/g/n	a/b/g/n/ac	a/b/g/n/ac
Bluetooth:	4.0	4.0	4.0	4.0	4.0
Rear Camera Mount:	Flush	Flush	Flush	Bump	Bump
Rear Megapixels:	8 MP	8 MP	8 MP	8 MP	8 MP
Rear Aperture:	f/2.4	f/2.4	f/2.2	f/2.2	f/2.2
Rear Pixel Size:	1.4µm	1.4µm	1.5µm	1.5µm	1.5µm
Rear LED Flash:	Single	Single	Dual	Dual	Dual
Touch ID:	No	No	Yes	Yes	Yes
Apple Pay (NFC):	No	No	No	Yes	Yes
Barometer:	No	No	No	Yes	Yes
Facedown:	No	No	Yes	Yes	Yes
SIM Card:	Nano	Nano	Nano	Nano	Nano
Original iOS:	iOS 6	iOS 7	iOS 7	iOS 8	iOS 8
Fastest iOS:	iOS 8	iOS 8	iOS 9	iOS 9	iOS 9
Maximum iOS:	iOS 9	iOS 9	iOS 9	iOS 9	iOS 9
Primary Material:	Aluminum	Polycarb.	Aluminum	Aluminum	Aluminum
Bendability:	130 lbs.	130 lbs.+	~130 lbs.	70 lbs.	90 lbs.
Height:	4.87 in.	4.90 in.	4.87 in.	5.44 in.	6.22 in.
Width:	2.31 in.	2.33 in.	2.31 in.	2.64 in.	3.06 in.
Depth/Thinness:	0.30 in.	0.35 in.	0.30 in.	0.27 in.	0.28 in.
Weight:	3.95 oz.	4.65 oz.	3.95 oz.	4.55 oz.	6.07 oz.
Orig. Price* (US):	US$199 US$299 US$399	US$99 US$199	US$199 US$299 US$399	US$199 US$299 US$399	US$299 US$399 US$499
Current Price* (US):	N/A	N/A	US$0 US$49	US$99 US$199	US$199 US$299

 

The difference between iphone5 and iphone5s

Reference:
http://www.everymac.com/systems/apple/iphone/iphone-faq/differences-between-iphone-5c-iphone-5s-iphone-5.html

Internal Differences

The iPhone 5 and iPhone 5c are both powered by a dual core 1.3 GHz Apple A6 processor and have 1 GB of RAM.
Apple notes that the iPhone 5s has a 64-bit "Apple A7" processor and an "M7 motion coprocessor." Apple does not provide additional technical details, but the always excellent AnandTech was first to determine that the Apple A7 processor is a ARMv8 derivative of Apple's "Swift" dual core architecture called "Cyclone" and it runs at 1.3 GHz. It also is 28 nm, has a 64k/64k level 1 (instruction/data) cache and a 1 MB level 2 cache. AnandTech reported that the iPhone 5s models have 1 GB of RAM, too.
The iPhone 5 and iPhone 5s have 16 GB, 32 GB, or 64 GB of flash storage whereas the iPhone 5c have 8 GB, 16 GB, or 32 GB.
Originally, the iPhone 5c models shipped with 16 GB or 32 GB of storage, but on March 18, 2014, Apple added an 8 GB option, only in the UK, France, Germany, Australia, and China. On April 16, 2014, as first spotted by 9to5Mac, Apple quietly added the 8 GB iPhone 5c model in Austria, Belgium, the Czech Republic, Denmark, Finland, Hungary, Italy, Ireland, Luxembourg, the Netherlands, Norway, Poland, Portugal, Spain, Sweden, and Switzerland.
On September 9, 2014, Apple rolled out the 8 GB configuration of the iPhone 5c worldwide and discontinued the 16 GB and 32 GB options. Apple also discontinued the 64 GB configurations of the iPhone 5s. On September 9, 2015, Apple discontinued the iPhone 5c altogether.
Consequently, the currently shipping iPhone 5s models only have 16 GB or 32 GB of storage. Of course, on the used market, all other capacities are available, too.

iOS Support Differences

The iPhone 5 models fully support iOS 6, iOS 7, iOS 8, and iOS 9 but the iPhone 5c and iPhone 5s models only support iOS 7, iOS 8, and iOS 9, without any support for earlier versions of the iOS. However, note that if any of these iPhone models have been updated to a later version of the iOS it is not simple to "downgrade" to an earlier version without resorting to "jailbreaks" or other hacks.

Comparison Chart

These differences -- materials, biometrics, cameras, identifiers, battery life, connectivity, processor, and storage -- along with pricing information are summarized below for your convenience:

iPhone	5	5c	5s
Intro Date:	Sept. 12, 2012	Sept. 10, 2013	Sept. 10, 2013
Disc Date:	Sept. 10, 2013	September 9, 2015	Current
Processor:	Apple A6	Apple A6	Apple A7
Cores:	Dual Cores	Dual Cores	Dual Cores
Coprocessor:	None	None	Apple M7
Original Storage:	16, 32, 64 GB	16, 32 GB	16, 32, 64 GB
Current Storage:	Discontinued	Discontinued	16, 32 GB
RAM:	1 GB	1 GB	1 GB
GSM/EDGE:	Yes	Yes	Yes
UMTS:	Yes	Yes	Yes
HSDPA:	Yes (DC-HSPDA)	Yes (DC-HSPDA)	Yes (DC-HSPDA)
HSUPA:	Yes	Yes	Yes
EV-DO:	Some Models	Some Models	Some Models
4G/LTE:	Yes (Most Models)	Yes (Most Models)	Yes (Most Models)
Bluetooth:	4.0	4.0	4.0
GPS:	GPS/GLONASS	GPS/GLONASS	GPS/GLONASS
802.11n:	2.4 GHz/5 GHz	2.4 GHz/5 GHz	2.4 GHz/5 GHz
Talk Time (3G):	8 Hours	10 Hours	10 Hours
Battery (Web - 3G):	8 Hours	10 Hours	10 Hours
Battery (Web - 4G):	8 Hours	10 Hours	10 Hours
Battery (Wi-Fi):	10 Hours	10 Hours	10 Hours
Battery (Music):	40 Hours	40 Hours	40 Hours
Battery (Video):	10 Hours	10 Hours	10 Hours
Standby Time:	225 Hours	250 Hours	250 Hours
SIM Card:	Nano	Nano	Nano
Original OS:	iOS 6	iOS 7	iOS 7
Fastest OS:	iOS 8	iOS 8	iOS 9
Maximum OS:	iOS 9	iOS 9	iOS 9
Facedown:	No	No	Yes
Biometrics:	No	No	Touch ID
Front Camera:	1.2 Megapixels (1.75µm)	1.2 Megapixels (1.9µm)	1.2 Megapixels (1.9µm)
Rear Camera:	8 Megapixels (1.4µm)	8 Megapixels (1.4µm)	8 Megapixels (1.5µm)
Aperture (Rear):	f/2.4	f/2.4	f/2.2
LED Flash (Rear):	Single	Single	Dual (True Tone)
Panorama:	Yes	Yes	Yes
Slo-Mo:	No	No	Yes
Burst Mode:	No	No	Yes
Materials:	Glass/Aluminum	Polycarbonate/Steel	Glass/Aluminum
Dimensions:	4.87 x 2.31 x 0.30*	4.90 x 2.33 x 0.35*	4.87 x 2.31 x 0.30*
Weight:	3.95 oz. (112 g)	4.65 oz. (132 g)	3.95 oz. (112 g)
Model No:	A1428/A1429 A1442	A1532/A1456 A1507/A1529	A1533/A1453 A1457/A1530
Price (Intro):	US$199, $299, $399†	US$99, $199†	US$199, $299, $399†
Price (Current):	N/A	N/A	US$0, $49†

Chapter 3 Static Techniques

K1: remember
K2: understand
K3: apply
K4: analyze

3.1 Static techniques and the test process

Terms

Dynamic testing, static testing

During static testing, software products are examined manually, or with a set of tools, but not executed.

Background

Any software work product can be reviewed, including requirements specifications, design specifications, code, test plans, test specifications, test cases, test scripts, user guides or web pages.

Advantages:

- Start static testing early in the life cycle, early feedback on quality issues can be established. Ex an early validation of user requirements.
- By detecting defects at an early stage, rework costs are most often relatively low and thus a relatively cheap improvement of the quality of software products can be achieved.
- Since rework effort is substantially reduced, development productivity figures are likely to increase.
- There is an exchange of information between the participants.
Static test contribute to an increased awareness of quality issues.

In conclusion, the quality improvement is not achieved once but has more structural character. The feedback from the static testing process to the development process allows for process improvement, which supports the avoidance of similar errors being made in the future.

12 essential skills for software architects

Severus' session:

Chapter 1
Gracious behavior


How would others describe you is the core value you need to build yourself.
The good way to build yourself is to become a gracious professional.

Learning to delegate.

Life is reflexive: listen, don't defend, be gracious.

Life or death for effective communication: always choose to respond in a gracious fashion. Reflect a positive response even when you receive negative messages,


Don't bury issues.

Forgive and forgetting past offenses.

Key point:
Part of building relationships is graciously accepting feedback.
Do others as you would have them do to you.

Principle compilation on 17 Mar 2016

Reading is to widen your knowledge, use your brain to look at problems sensitively and flexibly.
---
It takes 21 to 66 days to form a habit.
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When you feel boring during doing a thing, remember to the purpose making you do it.
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Whenever you make a change, you must consider two factors: emotion and reason.
Emotion is the one you like, reason is the one you want.
Considering what you want shows maturity.
---
People make title, do not judge people via title.
Do not chase the title, chase the value.
Do not chase the money, follow the value you want to create.
----
Success is to live healthy, happy and know to start with why.
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Manager has the first task to develop his/her member, to grow people.
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It's better to breathe with your stomach.
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Do not have the thought that you don't change yourself but you expect everything changes.
The mindset of different levels are different each other.
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Do not change all your good or bad habit at the same time.
Change one bad habit per month on average.
---
The more you delay your good habit, the more suffer you have in the future.
---
Shouldn't stay up late, should get up early in the morning.
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Three important skills to become a manager: communication, communication, communication.
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Face your fear, solve it. Don't let your emotion dominate your personality.
---
Don't use the word "try", just do.
---
Do not let you be lacking in awareness, because it will help you understand the root cause of a problem, know what you are.








David's session

Session on 4 Mar 2016

A Thành shared us:

- Always start with "why".
- Remember everything has a price.
- A quote "Life is a full of choices".

- Our life revolves around