Displayed viewing area switching device in a computer

1. A computer displayed viewing area switching device, comprising:

a switch support;

at least three button switches disposed separately from each other in a radial manner on the switch support, each button switch provided with an operating button toward a center of the switch support;

a manipulation lever having at least three manipulation projections corresponding to the operating buttons of the button switches;

a lever guide supporting the manipulation lever to be radially slidable; and

a spring member disposed between the manipulation lever and the switch support, the spring member having an elastic force resistant to the radial sliding motion of the manipulation lever, and allowing the manipulation projections to press the corresponding operating buttons by the radial sliding motion of the manipulation lever to generate movement signals moving the displayed viewing area in any radial direction.

2. The switching device according to claim 1 , wherein four button switches are disposed on the switch support and the manipulation lever has four manipulation projections corresponding to the four operating buttons of the four button switches.

3. The switching device according to claim 2 , wherein the spring member is cross-shaped, a center of which is coupled between the four manipulation projections.

4. The switching device according to claim 3 , wherein four spring supports supporting the spring member are provided on a rear side of the lever guide, and each end of the cross-shaped spring member is coupled to each spring support, respectively.

5. The switching device of claim 3 , wherein the switching device is provided in a computer casing and four spring supports supporting the spring member are provided on a rear side of the computer casing with each end of the cross-shaped spring member coupled to each spring support, respectively.

6. The switching device according to claim 4 , wherein each end of the spring member is laterally bent at an angle of 90 degrees, and coupled to each spring support, respectively.

7. The switching device according to claim 1 , wherein each manipulation projection corresponding to each operating button can simultaneously press two adjacent operating buttons in response to the radial sliding motion of the manipulation lever.

8. The switching device according to claim 1 , wherein the spring member is disposed between the at least three button switches.

9. The switching device according to claim 1 , wherein the switch support is a printed circuit board, and each button switch is a tact switch.

10. A computer, comprising:

a display device;

a main body processing information and controlling display of the information in a viewing area on the display device; and

a displayed viewing area manipulator, comprising:

at least three actively radially disposed switches generating radius signals to move the displayed viewing area along designated radiuses corresponding to the switches;

a radially slidable manipulation lever; and

a spring member providing an elastic force resistant to the radial sliding motion of the manipulation lever to allow activation of the switches.

11. The computer of claim 10 , further comprising a keyboard on which the displayed viewing area manipulator is disposed.

12. A viewing area switching device, comprising:

a lever guide supporting a manipulation lever to be radially slidable, the manipulation lever having at least three manipulation projections corresponding to operating buttons of at least three button switches; and

a spring member disposed between the manipulation lever and a switch support, the spring member having an elastic force resistant to radial sliding motion of the manipulation lever, and allowing the manipulation projections to press the corresponding operating buttons by radial sliding motion of the manipulation lever to generate movement signals moving the viewing area in any radial direction.

13. A method, comprising:

activating at least three button switches disposed separately from each other in a radial manner, each button switch being provided with an operating button toward a center of a switch support, to generate radius signals, the activating being via a spring member disposed between the at least three button switches, the spring member having an elastic force resistant to radial sliding motion of a manipulation lever to allow manipulation protections of the spring member to activate corresponding operating buttons by radial sliding motion of the manipulation lever; and

moving a displayed viewing area along designated radiuses corresponding to the switches according to the generated radius signals.

14. The method of claim 13 , wherein the moving comprises at least scrolling the displayed viewing area horizontally and vertically.

15. A computer displayed viewing area switching device, comprising:

at least three button switches disposed separately from each other in a radial manner, each button switch provided with an operating button toward a center of the switch support;

a radially slidable manipulation lever having at least three manipulation projections corresponding to the operating buttons of the at least three button switches; and

a spring member disposed between the at least three button switches, the spring member having an elastic force resistant to the radial sliding motion of the manipulation lever to allow the manipulation projections activate the corresponding operating buttons by the radial sliding motion of the manipulation lever to generate displayed horizontal or vertical scroll bar signals scrolling the displayed viewing area in the horizontal or vertical direction.

16. The displayed viewing area switching device of claim 15 , wherein the activated operating buttons generate radius signals moving the computer displayed viewing area along designated radiuses corresponding to the switches according to the radius signals.