Projectors & IWB vs Touch Screens - Blog - ANME

Projectors & IWBs vs Touchscreen TVs

Posted on: 3rd Apr 2019 by: Rick Cowell, Ric Turner

When making the decision between getting the traditional (but old-hat) interactive whiteboard (IWB) and projector, or an interactive touch-screen TV, each option has its pros and cons, some of which are shown in the table below:

Pros & Cons
Projector + 77" SMART IWB 65" / 75" CTOUCH Touchscreen
For Against For Against
  • Initial purchase cost
  • Failed parts more easily replaceable
  • More setup required
  • Fan noise
  • Shadowing on screen
  • Line-of-sight glare in eyes
  • More cabling required
  • Continual calibration of IWB
  • Poor resolution
  • Projector alignment issues
  • Filters / lens require cleaning / replacing
  • Gradual degradation of image quality over lamp-life
  • Plug and play out of the box
  • No fan noise
  • No shadowing on screen
  • No glare in teacher's eyes
  • Less cabling required
  • No ongoing calibration required
  • Higher resolution (HD / 4K)
  • Less eye fatigue
  • Brigher - direct light rather than reflected
  • Standalone use - no PC required
  • Cheaper to run than a standard projector
  • Initial purchase cost
  • Weight consideration of wall
  • No alternative if unit fails
    (warranties usually include a replacement if they cannot be repaired on-side)

Based solely on the pros and cons, the touch screen TVs are the clear winner, but price is going to be a significant factor in the decision too. If we consider the average/expected life-span of each option, we can see that the average life of projectors is only 6 years, and 6-8 years for IWBs:

Expected LIfespans
  • IWB
  • Projector
  • Projector Lamps
  • 6-8 years
  • 6 years
  • 1 year 10 months
    (3000 hours @ 8 hours per day, 200 days per year. Requiring 3 lamps during life of projector)
  • Touchscreen
  • 18.75 years
    (30,000 hours @ 8 hours per day, 200 days per year)

So if we assess the costs of both over 6 years:

Projected Costs
  • IWB
  • Projector
  • Lamps
  • Installation/cabling
  • £1,000
  • £400
  • £450 (3 @ £150)
  • £400
  • Touchscreen (65" / 75")
  • Brackets/cables etc.
  • Installation
  • Delivery
  • £1,999 / £2,799
     
  • £115
  • £280
  • £99
6 Year Total:

£2,250

6 Year Total:

£2,493 / £3,293

12 Year Total:

£4,500

12 Year Total:

£2,493 / £3,293

The touchscreen option does work out slightly more expensive, £243 at the time of publishing, but that doesn't take into account the reduced electrical usage, and weighed up with the other advantages, it makes it a far more appealing option overall.

 

Rick Cowell

Director and Founder of ANME Ltd.

Association of Network Managers in Education
Association of Data Managers in Education

Credit to Ric Turner, ANME Member for the intial research and comparisons.


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