Abstract: A system of switches having a memory/command bus having a first interface, a second interface and a third interface. A memory is connected to the third interface of the memory/command bus. The memory has a first memory address. A first switch monitors the memory/command bus and interprets information written to the first memory address as proxy information. The first switch is connected to the first interface of the memory/command bus. The second switch monitors the memory/command bus and interprets information written to the first memory address as proxy information. The second switch is connected to the second interface of the memory/command bus.

Abstract: A system for reducing clock speed and power consumption in a network chip is provided. The system can have a core that transmits and receives signals at a first clock speed. A receive buffer can be in communication with the core and be configured to transmit the signals to the core at the first clock speed. A transmit buffer can be in communication with the core and configured to receive signals from the core at the first clock speed. A sync can be configured to receive signals in the receive buffer at a second clock speed and to transmit the signals from the transmit buffer at the second clock speed. The sync can be in communication with the transmit buffer and the receive buffer.

Abstract: A programmable LED display system is disclosed. The system includes a programmable controller; a driver operative to generate a control signal in response to a signal provided by the programmable controller; and a display device operative to provide a visual representation of the state of the system in response to the control signal. The system also includes means for determining which state condition is displayed when more than one state condition exists.

Abstract: A network of switches having a first switch having a first memory interface and a first expansion port. The network also has an expansion bus having a first expansion bus interface and a second expansion bus interface. The first expansion bus interface is connected to the first expansion port. A second switch has a second memory interface and a second expansion port. The second expansion port is connected to the second expansion bus interface, thereby connecting the first switch to the second switch, wherein the expansion bus allows the first switch to directly access the second memory interface through the second switch and the second switch to directly access the first memory interface through the first switch.

Abstract: A programmable LED display system is disclosed. The system includes a programmable controller, a driver operative to generate a control signal in response to a signal provided by the programmable controller, and a display device operative to provide a visual representation of the state of the system in response to the control signal. The system also includes means for determining which state condition is displayed when more than one state condition exists.

Abstract: A memory management method that has the steps of assigning pointers to free memory locations and linking the pointers to one another creating a linked list of free memory locations having a beginning and an end. A free head pointer is assigned to a memory location indicating the beginning of free memory locations and a free tail pointer is assigned to a memory location indicating the end of free memory locations. An initial data pointer is assigned to the memory location assigned to the free head pointer and an end of data pointer is assigned to a last data memory location. The free head pointer is assigned to a next memory location linked to the last data memory location assigned to the end of data pointer. The next memory location indicates the beginning of free memory locations.

Abstract: A programmable LED display system is disclosed. The system includes a programmable controller; a driver operative to generate a control signal in response to a signal provided by the programmable controller; and a display device operative to provide a visual representation of the state of the system in response to the control signal. The system also includes means for determining which state condition is displayed when more than one state condition exists.

Abstract: A network of switches having a first switch having a first memory interface and a first expansion port. The network also has an expansion bus having a first expansion bus interface and a second expansion bus interface. The first expansion bus interface is connected to the first expansion port. A second switch has a second memory interface and a second expansion port. The second expansion port is connected to the second expansion bus interface, thereby connecting the first switch to the second switch, wherein the expansion bus allows the first switch to directly access the second memory interface through the second switch and the second switch to directly access the first memory interface through the first switch.

Abstract: A system of switches having a memory/command bus having a first interface, a second interface and a third interface. A memory is connected to the third interface of the memory/command bus. The memory has a first memory address. A first switch monitors the memory/command bus and interprets information written to the first memory address as proxy information. The first switch is connected to the first interface of the memory/command bus. The second switch monitors the memory/command bus and interprets information written to the first memory address as proxy information. The second switch is connected to the second interface of the memory/command bus.

Abstract: An apparatus for automatically performing analytical testing of individual distant samples of biological fluids wherein a test sample is reacted with test reagents and tested for a change in optical characteristics. A memory stores a plurality of different test protocols. An operator-actuated keyboard is used to select one of the test protocols from the memory. Individual distinct samples of biological fluid to be tested are received in a sample cell. The cell is heated to a preselected temperature. The apparatus transports an individual sample cell to a first location adapted to filter unwanted nonfluid material from the fluid to be tested and to remove excess fluid to be tested from the sample cell to cause a precise accurate volume of fluid to remain in the sample cell for testing.

Abstract: The invention herein is directed to an improved thromboplastin composition wherein the thromboplastin is supplied in a tablet separate from calcium salts in order to stabilize the thromboplastin.

Abstract: An apparatus for automatically performing analytical testing of individual distinct samples of biological fluids wherein a test sample is reacted with test reagents and tested for a change in optical characteristics. A memory stores a plurality of different test protocols. An operator-actuated keyboard is used to select one of the test protocols from the memory. Individual distinct samples of biological fluid to be tested are received in a sample cell. The cell is heated to a preselected temperature. The apparatus transports an individual sample cell to a first location adapted to filter unwanted nonfluid material from the fluid to be tested and to remove excess fluid to be tested from the sample cell to cause a precise accurate volume of fluid to remain in the sample cell for testing.

Abstract: A difference amplifier continuously generates a signal representing the difference between the optical densities of a platelet rich and a platelet poor sample of blood plasma. If this signal lies within a predetermined range, a variable gain amplifier multiplies the difference signal by a factor which is proportional to the initial difference signal. Electronic circuitry automatically determines the multiplying factor by comparing the initial difference signal to a predetermined magnitude. The multiplied difference signal is continuously recorded on a chart recorder and is displayed as a percentage of aggregation on a digital display. An optional filter circuit is provided for selectively filtering the difference signal.

Abstract: The peak value of the first derivative of the optical density time curve is related to individual clotting factor levels, deficient or elevated. The relationship is logarithmic for all factors except fibrinogen and it is linear for fibrinogen. The apparatus and process disclosed herein apply the relationship to determine blood clotting factor levels.

Abstract: A difference amplifier continuously generates a signal representing the difference between the optical densities of a platelet rich and a platelet poor sample of blood plasma. A variable gain amplifier multiplies the difference signal by a factor which is proportional to the initial difference signal. Electronic circuitry automatically determines the multiplying factor by comparing the initial difference signal to a predetermined magnitude. The multiplied difference signal is continuously recorded on a chart recorder and an optional filter circuit is provided for selectively filtering the difference signal.