摘要:
Data transfers between input/output (I/O) devices and a central processing unit (CPU) take place under instruction or base cycle steal control a byte at a time where the I/O device attachments connect to ports and the ports connect to the CPU. Data transfer can be synchronous or asynchronous. The port involved in the data transfer sends out a device address and command information simultaneously on port data bus out and command bus out, respectively, to the I/O attachments. The addressed I/O device can respond any time within a predetermined time interval. If an I/O device does not respond within the time interval, a blast condition generated by the port causes the I/O attachments to clear the busses between it and the port. During execution of an I/O instruction, the CPU clock is first held in a particular time state while phase clocks and port clocks continue to run and synchronization between the port and I/O attachment is taking place. Upon completion of the synchronization sequence, the port generates an advance time signal to the CPU to advance the CPU clock. The CPU clock runs and the storage clock can be activated depending upon the type of I/O instruction being executed, the CPU clock runs until it reaches a second particular time state and then remains at that particular time state until the port again generates an advance time signal to the CPU. The activity taking place as the CPU clock is advancing depends upon the type of I/O instruction, but generally a data transfer occurs, and the data is entered into or transferred from local storage registers or main or control storage. The extended second particular time state is used for a de-synchronization sequence between the port and I/O attachment.
摘要:
The first time period of the instruction fetch cycle is eliminated when fetching the branch to instruction in a computer system operating in a non-overlap mode. Whenever a branch instruction is decoded, the storage address register (SAR) is directly loaded during execution of the branch instruction with certain bits from a storage data register (SDR) concatenated with certain bits from an operand register to form the branch to address in SAR. The instruction counter is incremented in the usual manner but the incremented address is not loaded into SAR. The clock is advanced to the second rather than the first time state of the next instruction fetch cycle. Thereafter, the branch to address which is residing in the operand register, is incremented and loaded into the instruction counter.
摘要:
This invention relates generally to: (1) methods of forming enhanced-surface walls (20) for use in apparatae (e.g., heat transfer devices, fluid mixing devices, etc.) for performing a process, (2) to enhanced-surface walls per se, and (3) to various apparatae incorporating such enhanced-surface walls.The method improved method broadly comprises the steps of: providing a length of material (21) having opposite initial surfaces (22a, 22b), said material having a longitudinal centerline (x-x) positioned substantially midway between said initial surfaces, said material having an initial transverse dimension measured from said centerline to a point on either of said initial surfaces located farthest away from said centerline, each of said initial surfaces having a initial surface density, said surface density being defined as the number of characters on an surface per unit of projected surface area; impressing secondary patterns (23a, 23b) having secondary pattern surface densities onto each of said initial surfaces to distort said material and to increase the surface densities on each of said surfaces and to increase the trans-verse dimension of said material from said centerline to the farthest point of such distorted material; and impressing primary patterns (25a, 25b) having primary pattern surface densities onto each of such distorted surfaces to further distort said material and to further increase the surface densities on each of said surfaces; thereby to provide an enhanced-surface wall for use in an apparatus for performing a process.
摘要:
A device and method for manufacture thereof having a one or more cantilevered cutting teeth integrally formed in raised configuration on a flat base fro cutting food items moved along said base. The free end portion is formed by upper and lower etched out portions of the upper end of said cutting teeth to form a cutting edge. The upper surface of the upper cut-out portion of the teeth is situation at a position out contact with food items being cut. A substantially portion of the teeth is coated with a low friction material, except for the cutting edge In a second embodiment one or more domed cutting elements are cut out of base sheet and may include a leading V-shaped cutting edge.
摘要:
An electric sharpener having two pairs of interlocking abrasives for sharpening the edge of blades to different sharpening angles. An adjustment assembly simultaneously moves the wheels of each pair either toward or away from each other to adjust the sharpening angle produced by pair of abrasive wheels in a sharpening operation. The adjustment assembly is provided with a rotatable shaft having an external handle which engages a lower platen. The lower end of the shaft is threaded to move the platen in vertical direction to move translation bars affixed to the platen. The translation bars extend through elongated slots in respective pairs of adjustment arms coupled to each pair of abrasive wheels to rotate and vary the spacing between the abrasive wheels and adjust sharpening angles.
摘要:
An adjustable manual abrasive sharpener having a pair of sharpening slots formed in a frame with opposing abrasive arms being pivotally mounted in each of the sharpening slots. A rod is mounted on the frame for rotatable motion and for linear motion long its axis of rotation from a position at which the rod is locked against rotation to a depressed position whereby the rod may be rotated. The bottom end portion of the rod includes a pinion gear which engages a pair of gear racks which are mounted for movement laterally relative to the axis of rotation of the rod. The pair of gear racks respectively engage slots formed on the bottom of the abrasive arms in each sharpening slot. Rotation of the rod causes movement of the gear racks to adjust each pair of abrasive arms with respect to each other to vary the sharpening angle of the abrasive elements.
摘要:
The Epstein-Barr virus (EBV) specific polypeptides ETFTETWNRFITHTE (SEQ. ID NO: 1), GMLEASEGLDGWIHQ (SEQ. ID NO:2), HQQGGWSTLIEDNIP (SEQ. ID NO:3), and KQKHPKKVKQAFNPL (SEQ. ID NO:4) are among those disclosed. Also disclosed are the use of these polypeptides for the production of polypeptide-specific antibodies and the diagnosis and treatment of EBV-associated disease.
摘要翻译:EB病毒(EBV)特异性多肽ETFTETWNRFITHTE(SEQ ID NO:1),GMLEASEGLDGWIHQ(SEQ ID NO:2),HQQGGWSTLIEDNIP(SEQ ID NO:3)和KQKHPKKVKQAFNPL(SEQ ID NO:4) 是披露的。 还公开了这些多肽用于产生多肽特异性抗体以及EBV相关疾病的诊断和治疗的用途。
摘要:
A device and method for manufacture thereof having a one or more cantilevered cutting teeth integrally formed in raised configuration on a flat base fro cutting food items moved along said base. The free end portion is formed by upper and lower etched out portions of the upper end of said cutting teeth to form a cutting edge. The upper surface of the upper cut-out portion of the teeth is situation at a position out contact with food items being cut. A substantially portion of the teeth is coated with a low friction material, except for the cutting edge In a second embodiment one or more domed cutting elements are cut out of base sheet and may include a leading V-shaped cutting edge.