There are many major vendors of handheld devices. Most of the manufacturers sell directly in addition to communication service providers and stores like Best Buy.
There are many different vendors for the 2 most common types of computers. Dell and Apple are 2 majors vendors.
IBM and Cray Inc.
handheld devices: Virtual memory, you may use batch programming here also. real time systems: time sharing
Keyboard & Mouse
Sensitive information that is transmitted between two wireless devices can be intercepted and disclosed if not protected by strong encryption. Handheld devices, which are easily stolen, can reveal sensitive information.
Two major vendors of business process management tools are HP and Oracle. Both IT corporations are based in the US. Oracle are based in Santa Clara, California and HP are based in Palo Alto, California.
The two types of handheld vacuums are electric and rechargeable
Intel and Advanced Micro Devices (AMD)
A market vendor should not be charging two vendors for the exact space at the same time. That would be double booking and it will cause friction between the two vendors.
Be more specific of the two types you want!
Sony and Dell.
Most handheld drills fully recharge in about two hours, although some take up to eight.