D-EL2 Digital Microscope , $249

Objective Lenses: Achromatic, glass 4x, 10x and 40xS (spring loaded) mounted on a precision revolving objective turret. 4x objective can be used with top flexible LED light to view non-transparent objects suc as metal, rocks or paper.

D-EL1 Digital Microscope ,$99

Illumination: 8-LED in ring formation with 2-step brightness control.
Camera Sensor: 1/3" CMOS chip, 1.3 mega pixels.
Power: Directly through USB 2.0 connection.
Computer Info: Only works with PC. Will NOT work with MAC.
Includes: Metal stand and Motic Toolbox Software.
Software Features: Image management, capture images, time lapse photography, video, measure, annotate images, edit images.

http://www.microscopeworld.com/MSWorld/DEL1-Digital-Zoom-Microscope-Camera.aspx

DC5-420TH Digital Microscope and Software,$$1,440

Objective Lenses: 1x - 4x objectives provide a zoom range from 10x - 40x when using 10x eyepieces.
Eyepieces: Choose from paired widefield 5x, 10x, 15x or 20x eyepieces (see table below for specifications), all are 45° inclined, with dual diopter adjustments, interpupillary adjustment from 55mm to 75mm

http://www.microscopeworld.com/MSWorld/National-Optical-DC5-420TH-Digital-Stereo-Microscope.aspx

2MP USB Digital Microscope endoscope Magnifier 400X NEW ,$42

Feature:

Image sensor: 2Mega Pixels (interpolated to 3MP)
Still capture resolution: 1600x1200, 1280x1024, 1280x960, 1024x768, 800x600, 640x480, 352x288, 320x240, 160x120
Video capture resolution: 1600x1200, 1280x1024, 1280x960, 1024x768, 800x600, 640x480, 352x288, 320x240, 160x120
Focus Range: Manual focus from 10mm to 200mm
Frame Rate: Max 30f/s under 600 Lus Brightness
Magnification Ratio: 20x to 400x

http://cgi.ebay.com/2MP-USB-Digital-Microscope-endoscope-Magnifier-400X-NEW-/280679754960?pt=LH_DefaultDomain_0&hash=item4159d12cd0#ht_5294wt_1059

Digital Microscope ,$60

Features of the USB Digital Microscope Handheld

100x, 200x, 300x power microscope
Digital microscope when attached to PC
Regular Microscope when you are not attached to a PC
Can also be used as a webcam
Display camera microscope usb images on your PC
Capture, record, print, email and store images and videos
640x480 resolution
Metal Stand
USB Connection

http://www.compuvisor.com/digital-microscope-usb-microscope.html

Digi Microscope Video Camera ,$60

Product Description
This new Digital USB Microscope turns your computer into a great tool for microscopic exploration! Connects directly to your computer with a simple USB connection. Software for connection drivers and viewer is included. 1.3 Mega pixel digital camera allows you to capture still images or video. 200x lens allows for 1280 px x 1024 px capture resolution. 24bit RGB color. Manual focus from 10mm to infinity.
http://www.amazon.com/Digital-USB-Microscope-Video-Camera/dp/B0011E0IYW

Digital USB microscopes

Do you need a microscope? You can choose the old microscope which costs more than 300$, you also need to learn how to use the old microscope, how to adjust the lens. The digital usb microscope are new generation of microscopes. It is a newly developed microscope that can be attached to your computer.  It has the features like:

1. cheaper than the old microscope, the price are 50$

2. easily to install, just insert the usb to the computer.

3. Small, light, easy to carry

4. Not fragile

 

And many other advantages. you can zoom in the image that you want to capture even if it's too small, the distance may vary depending on the capacity of your digital microscope though . The applications of new USB digital microscope technologies are numerous . Digital USB Microscope is extraordinary new-fangled educational equipment that's a great deal other than a learning device. The digital USB microscope for computers is the solution if in need of microscopic digital photography image capture. Today, research, learning and education are enhanced with a Digital USB microscope as the computer is incorporated to make available immediate and real time digital capture. Connecting a topmicroscope microscope camera to a USB2 port is easy

http://www.m.topmicroscope.com/?p=14