Personal computer

About: Personal computer is a research topic. Over the lifetime, 58809 publications have been published within this topic receiving 800814 citations. The topic is also known as: PC.

Method and apparatus for noninvasively determining hematocrit

Abstract: This invention is a method and apparatus for non-invasiveness in determining hematocrit, utilizing the frequency dependent electrical impedance characteristics of whole blood by electrically stimulating a patient body portion containing a vascular compartment with a current source over a range of frequencies. A hematocrit measurement system includes a signal generator and demodulator [SGD] (34) that sends an applied signal to an electrode pod (36) that applies a current to a limb of a patient. The electrode pod (36) receives resulting measured voltage signals and provides them to the SGD. The SGD provides to a personal computer [PC] (42) signals indicative of the current passing through the limb of the patient and the resulting voltage. The voltage and current may be measured for various frequencies over, for example, a range from about 10 kHz to about 10 MHz. The electrical impedance from the blood alone is isolated from the total limb impedance from the blood, tissue, bone, etc. by determining the difference between measurement at different blood volumes. The hematocrit is determined by the PC based on inphase and quadrature data provided by the SGD. A neural network (52) may be useful in determining the hematocrit from the blood impedance patterns.

Waterproof casing for Hewlettt-Packard Jornada portable personal computer

Abstract: Waterproof casings for use with a portable handheld computer, auch as a HP Jornada™ portable handleld computer, for exmaple. The waterproof casings comprise a separable plastic casing having a watertight rubber seal. The plastic casings are compact, light and durable with a clear rubber screen protector, allowing a touch point screen of the portable handleld computer to be operable. The portable handheld computer is placed inside the waterproof case which is latched closed to create a watertight container. The plastic casing is preferably designed to be waterproof up to a depth of about 100 feet. The present invention allows the use and protection of a HP Jornada portable handheld computer in many environments including protecting it from the posibility of water damage.

Use of Handheld Computers in Medical Education: A Systematic Review

Abstract: BACKGROUND: Over the past decade, handheld computers (or personal digital assistants [PDAs]) have become a popular tool among medical trainees and physicians. Few comprehensive reviews of PDA use in medicine have been published.

Computer network of distributed virtual computers which are EAC reconfigurable in response to instruction to be executed

Abstract: A virtual network consists of many distributed virtual computers interconnected over a communication network of individual links, such as optical fibers or electrical conductors, for example. Each distributed virtual computer has at least two ports connected over respective links to other respective distributed virtual computers on the network. Each distributed virtual computer is connected to or resident within its own host, each host typically being a conventional computer such as a personal computer or a work station, for example, although at least one of the hosts may itself be another virtual computer. Each distributed virtual computer has reconfigurable logic elements such as an FPGA or an array of FPGAs.

Disk operating system loadable from read only memory using installable file system interface

Abstract: A data processing system, such as a personal computer, contains bootable DOS programs that are stored in a ROM as an alternate file system in which the files are stored in packed format. When the system is powered on, the programs are rapidly booted up or loaded from ROM into RAM and executed to "instantly" (as it appears to the user) place the system in operation.