## MS Edge Zoom

by roger on Aug.07, 2017, under Uncategorized

Open the Registry Editor (type regedit in Start menu). Open the following folders/keys: HKEY_CLASSES_ROOT → Local Settings → Software → Microsoft → Windows → CurrentVersion → AppContainer → Storage → microsoft.microsoftedge_8wekyb3d8bbwe → MicrosoftEdge → Zoom. Double-click the entry called ZoomFactor, set the Base to Decimal, change the data to 100000, and click OK. Exit the Registry Editor.

**On screen with 1920 pixel width:**

125000 ~188% toobig

123000 ~185%

122000 ~183% OK

116666 ~175%

## Website Management

by roger on Jul.17, 2017, under Uncategorized

### Simple order of issues:

- Acquire a domain name: Example ~ register a unique name with fasthost.co.uk
- Acquire space on a hosting site: Example vooservers.com or xilo.net
Download two simple applications to manage the basic structure of your website, a) an editor to make or tweek pages and b) an application to manage the files on your website.

Many domain name registering and hosting sites offer inbuilt website builders. Whereas they are convenient for the simplest of options they are similar to eating canned food forever once you decide cooking is too much effort for the benefits.

Install example introduction page on webspace hosted:

**See page 2 for sample page**, how to make and**how to place on webspace (page 3)**.*Your hosting may have provide you with a text editor that you can use once logged into your website control panel, but I would advise against this except in an emergency when alternatives are not practical.*- Link domain name registered to webspace with intro page: It can take some hours before the internet has acknowledged this new website
- Once it has you should be able to see your introduction page by typing your domain name into any browser (Firefox, Edge, Safari, etc)

## Bluetooth and Metered Connections

by roger on Jul.05, 2017, under Uncategorized

Send feedback » more...## Broadband Speed

by roger on Nov.21, 2016, under Uncategorized

Appended are a few links to 'Speed Testers'.

**Speed** Speed is really the quantity of designed data transfer that can be transferred over a second. It is varies widely due to type of connection and distance of travel.

**Bandwidth:** It is best to think of this as bandwidth, i.e. the maximum amount of data that your connection can handle without many errors. For example; when sending an email it matters little if the transfer rate is highly variable as long as the message gets sent, however stability and error free transfer is highly desirable if streaming music or video

If you do not have either Fibre to the House (FTH) or Fibre to the cabinet (FTC) then you will be connected to your local exchange by a pair of copper wires. The longer the wires the lower the signal to noise ratio etc. The built in error corrections will keep chopping the signal into small bits that can be repeated and checked and so the overall speed of data transfer will be reduced. There is a table of expected transfer rate vis a vis distance from exchange.

1. http://www.speedtest.btwholesale.com/ which has a further option to do a diagnostic test and more

2. Ookla offers it's services to third parties

http://www.supportal-test.co.uk/ a simple and quick measure of download and upload

http://www.mybroadbandspeed.co.uk/speedtester/ seems to note the provider but very quick

http://speedtest.net.uk/ simple but slow to initiate

http://beta.speedtest.net/run

https://www.ookla.com/demo?template=2&features=0 Sample of Ookla service

3. Quick download only readout: https://fast.com/

## Computing the Square Root

by roger on May.01, 2017, under Uncategorized

### How the manual calculation of a square root works:

Take the solution algebraically as (a + b) (a + b) => a2 + 2ab + b2 => a2 + b(2a +b)

The method pairs the digits from the decimal point and starting with the most significant finds the single integer square root for that pair. The second and continuing operation adds the remainder of that to the next pair. It may be that the most significant pair is only a single digit as in one hundred and forty four 1 44

Lay out the solution as though working on long division with the object under a line and the subsequent divisors to the left below each other.

**Example: Find the square root of 40.96**

- Separate the number into pairs of digits from the decimal point, which is simple in this case; rooting a number effectively halves the digits. (40 . 96)

- Find the highest number that multiplied by itself will divide into the first 'pair' (40)

6 x 6=36~~(7 x 7=49)~~so we use 6 - this is 'a'

- Place this number, as a part solution above its pair

6

40 . 96

- Subtract 36 (a
^{2}) from the 40 and incorporate the next pair => 4.96

Now we use the b(2a + b) to resolve b, and can ignore the decimal point in the following processes as each solution is an integer to be placed above it's respective pair.

Now resolve the b(2a +b) from the 496

- Double a => 12 and move one point left => 12*
- Find a number such that 12* x * is equal to or less than 496 which in this case is 4 or b

i.e. 124 x 4 = 496 - Place this digit above its pair

6 . 4

40 . 96

With no remainder the solution is complete 6.4 is the square root of 40.96.

Should there be a remainder continue the process to find another b from the remainder and the next two digits until you find a rational solution or you have a suitably significant number.