Sunday 3 April 2022
Friday 1 April 2022
Thursday 31 March 2022
FORMULAE
Spreadsheet
formulae usually contain numbers, arithmetical operators and cell
references. They can be typed in directly or Excel can help build them
for you. You can use all the standard mathematical operators in your
formula; e.g. () + - / *. A spreadsheet is an excellent platform to work out
sums and functions.
ENTERING
A FORMULA
Activate
the cell in to which you want to enter the formula.
Enter
"= (equals)"
Type in
the formula by hand or:
Click in
to each of the cells, adding the relevant operators (+/* - etc.) where
appropriate.
Click on
the tick to accept the formula or press enter.
In the
example below; column B holds information on the Cost Price of the products
listed in column A.
Column C requires a formula to calculate a 10% Mark Up on the Cost Price for each product. Cell D3 requires the total of the Cost Price and the Mark Up columns giving the Retail Price.
Once the
Mark Up price has been calculated, working out the Retail Price is quite
easy.Type = in cell D3 (this is the cell where you want the answer to appear),
click in to cell B3, select the plus option and click in to cell C3.
The last
thing that you should always do is check the formula, if you are happy with it,
click the tick or press enter.
The next
step in the process is utilising the AutoFill feature to fill the formula down
each row. There are always several ways to complete the task in Excel. In
the previous example, the formula that you have just completed to work out the
Retail Price can be repeated for each product. It is quite permissible
for you to repeat the process and type each formula out manually on each
row. However, because both parts of the formula are on the same row in
this example you can use the AutoFill feature.
AutoFill
The small
black cross will appear when you move your mouse pointer over the bottom right
hand corner of any selected cell or cells.
Once the
small black cross appears simply click and drag down the appropriate number of
rows and the formula will be copied down. Note: You can also double
click the small black cross and the formula will fill down, until it hits a gap
or information in a cell.
The next
step in our little example is to total each column. There are two ways
that we can do this. One, use the formula =B3+B4+B5 etc. or two, use a
Function called AutoSum. This function has been designed to add up lists
or ranges, as they are called in Excel.
Both
examples will provide the correct result however; you will be restricted by
using multiple + symbols.
AutoSum
function
The AutoSum
function is the most common function used Excel and therefore it appears in
more than one place on the Ribbon. The AutoSum feature is at the right
side of the home ribbon.
The first
thing you must do is click in the cell where you want the answer to appear.
Then click the AutoSum button.
The
function will guess what you want to add up, you must check that it is correct
before clicking the tick or pressing enter.
In the
example below the function has guessed correctly so it is safe to click the
tick or press enter.
Once
again, all the elements in this formula are in the same column so you can use the
AutoFill feature to drag the formula in to column D.
Make sure
that you see the small black cross in the bottom right hand corner before you
start to drag.
The
results are displayed under each column as shown below.
In the
following example, I want to look at what happens when the AutoSum or any other
function for that matter does not pick up the correct range of cells.
As you
can see from the example above the blank row has caused a problem.
The
AutoSum feature guesses that you want to add up the figures up to the gap and
not beyond it.
You will
now need to intervene if you want all of column B to be added together.
In the
example above, I have selected the first cell that I want to add and then with
the large white cross, selected the rest of the cells.
Make sure
that you check the formula, before clicking the tick.
Steve Says I cannot emphasise enough; how important
it is to check the cell references on the formula bar. I always
recommend that new users select the tick on the formula bar to accept
formulae rather than pressing enter, that way they are always physically
checking a formula before accepting it. If things go wrong, click the
Red Cross on the Formula bar and start again. |
Sums and functions are easy to do in Excel but checking the formula is the most important part when dealing with sums and functions
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Wednesday 30 March 2022
Tuesday 29 March 2022
Monday 28 March 2022
Connecting Shapes in Microsoft Visio
BASIC
DIAGRAMS
Several shapes are positioned onto the drawing canvas.
When you drop the shape on the grid it will snap to the nearest grid line.
The white circles facilitate size changes; the small circle at the top of each shape provides rotation options.
When the connector tool is activated shapes display connection points when the mouse hovers over the shape.
Some of the shapes will have yellow circles (Control handles) these have distinctive
features for each shape. If you hold
your mouse over the shape, you will see a text box description as shown below.
If you want to move several shapes in one go, you can use
your shift key to select each shape or drag over them with your mouse and then
move them as a group.
There are two types of shapes, one-dimensional and two-dimensional as shown below.
CONNECTING
SHAPES
There are three main types of connector in Visio, Inward, Outward and Inward/Outward.
Inward connectors:
Most shapes have inward connection points, which means that
you can glue connectors or other shapes with Outward connectors to them. (Black
Squares)
Outward Connectors:
A 2-D shape with an Outward connection point can be glued to another 2-D shape with an Inward connection point. Right click on the connection point to change the type. Firstly, activate the Connection Tool.
Once the connector is changed it will glue to the Inward
connector on the other shape and move as one.
Inward/Outward Connector
When you create your own shapes, you can set their connection
point type.
Use inward connection points in drawings that use connectors (connector: Any
one-dimensional (1-D) shape that can be glued between two shapes in a drawing
to connect the shapes.) to connect shapes, such as flowchart
diagrams.
Use inward or outward connection points when you want to glue 2-D shapes together in a particular direction or order. For example, in an office layout diagram, if you want outlet shapes to be attracted to walls:
Set
the outlet shape to have an outward connection point.
Add
inward connection points to the Wall shape (perhaps spaced according to
electrical wiring code).
Use inward/outward connection points to allow shapes to be
glued together in any order. For example, if you have a wall shape with
inward/outward connection points, it won't matter which wall segment you drag
first; it will always glue to another shape. However, if you have an outward
connection point on one end of the wall and an inward connection point on the
other end, you will need to drag the outward end to an inward end to glue the
walls together.
There are two types of glue in Visio
Shape to Shape and Point to Point
Shape to Shape
With shape-to-shape glue (also known as dynamic or
"walking" glue), a connector stays glued to shapes by moving to the
closest available connection points as the shape is repositioned.
Point to Point
With point-to-point glue (also known as static glue), a
connector stays glued to its specific connection point on each shape when you
reposition the shapes.
A shape's connection point turns red when you glue a connector
to a specific point on a shape.
To create a shape-to-shape connector, click the connector
tool on the toolbar.
Drag the first shape into position and leave it selected then drag the second shape into position. The connector will snap into place.
Shape – To – Shape the outline on the boxes turn green as
you float over them (not over a connection point).
When the shape is moved the connector moves to the nearest point.
Point-to-Point connections
Click the connector tool and hover over the first shape
until the connection point is highlighted, then drag to the other shapes
connector point.
If you move either of the shapes, the connection will be
glued to the
original position.
Although shapes have pre-set connection points, you can add additional connection points by selecting the connection tool.
Hold the Control Key down and click on the shape to apply
the new connection point or points.
You can use the connector tool to join the new connection
points as shown above.