Printers - A Practical Buyers Guide - 1

Friday, October 15, 2010 · 0 comments

Printers - A Practical Buyers Guide - 1
Autosummarize from article “Printers - A Practical Buyers Guide” by Iggy Quazi

Printers have also become specialised for their intended purpose.It is no longer a case of "a printer is a printer". Inkjet Technology

Inkjet printers form images by spraying tiny droplets of liquid ink onto paper. A quality inkjet printer can produce very near photo-quality images using specialist photo coated paper. Inkjet ink is specially formulated for specific printer models and their purpose, much technology is involved in the development of these inks to improve print quality, longevity, drying speeds and printing speeds etc. Inkjet printers use anything between two and eight ink cartridges to do their job. Inkjet printers are the best solution for most people and are usually the most cost effective way to print - unless you are printing large volumes.

Portable Inkjet Printers

These printers are small, lightweight and ideal for people on the move. Although the printing of high quality photographs is usually beyond this type of printer, basic colour printing is of good quality and the quality of text print is mostly outstanding considering the size of these tiny portable A4 printers. These printers are not suitable for high volume printing.

Inkjet Printers

The Inkjet Printer is the most commonly used type of printer among home and small business users. With excellent all round printing capabilities, from black & white text print and good colour prints through to very hi-resolution, high quality photographs using Inkjet Photo Printers. Multi-Function Inkjet Printers

Creating a Function to Convert Numbers into Roman Numerals

Saturday, March 27, 2010 · 3 comments

To create a number of letters we often use roman numerals to indicate the month of making the letter.For example, the letter number is '001/Int/III/2010' where the symbol 'III' indicates that the letter was made in March 2010.

For this we need a function that can convert an integer number from 1 to 12 into roman numerals. In the Visual Basic programming, we can easily create such a function. Well, here we'll show an example program to create such functions, as well as examples of how to use it.

  • First open your VB program and select standard exe form
  • Click the View menu
  • Click the Code menu

  • Write the Visual Basic (VB) program code below

    Function IToR(i As Integer) As String Dim s As String s = "I II III IV V VI VII VIIIIX X XI XII " IToR = Mid(s, (i - 1) * 4 + 1, 4) End Function

  • Click the View menu
  • Click the Object menu
  • Put two label controls, two textboxes and a CommandButton to the form
  • Change the Caption of first label into 'Month'
  • Change the Caption of second label into 'Roman Numeral'
  • Change the name of the first textbox into 'txtMonth'
  • Change the name of the second textbox into 'txtRomNum'
  • Remove texts on the first and second textboxes
  • Change the name of the CommandButton into 'cmdConvert'
  • Change the CommandButton caption into 'Convert'
    So your Screen design will look like the image below:

  • Double click CommandButton 'Convert'
  • Write below Visual Basic (VB) program coding

    Private Sub cmdConvert_Click() txtRomNum.Text = IToR(Val(txtMonth.Text)) End Sub

    Okay, you have completed the program
    Now it's time to test
  • Run your program
  • Type a number such as 8 in the first textbox
  • Click CommandButton 'Convert'
    Consider the results

  • What's an Event in Visual Basic?

    Thursday, September 10, 2009 · 3 comments

    An event is an action that recognized by a control or a form. For examples moving mouse over a control, clicking a mouse, pressing a key, etc. You can write code in an event that runs when the event occurs.

    Every object in Visual Basic has a set of event that it recognizes. Each object has specific events. Here are list of some events than owned by each object:

    Object name: CommnandButton
    Events owned: Click, DragDrop, DragOver, GotFocus, KeyDown, KeyPress, KeyUp, LostFocus, MouseDown, MouseMove, MouseUp, OLECompleteDrag, OLEDragDrop, OLEDragOver, OLEGiveFeedback, OLESetData and OLEStartDrag.

    Object name: TextBox
    Events owned: Change, Click, DblClick, DragDrop, DragOver, GotFocus,