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A numerical value calculated from a series of bits of digital data, often by summing their values, used to test whether the data has changed during storage or transmission.

check′sum′ v.


a digit representing the number of bits of information transmitted, attached to the end of a message in order to verify the integrity of data
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Noun1.checksum - a digit representing the sum of the digits in an instance of digital data; used to check whether errors have occurred in transmission or storage
confirmation, substantiation, verification, check - additional proof that something that was believed (some fact or hypothesis or theory) is correct; "fossils provided further confirmation of the evolutionary theory"
References in periodicals archive ?
Servers Should Provide Ecc Memory Capabilities To Allow The Server To
Redesigned from the inside out, the all-new Mac Pro features the latest Intel Xeon processors, dual workstation-class GPUs, PCIe- based flash storage and ultra-fast ECC memory.
RMT extends the capability of ECC memory by detecting the location of the corrected memory error and prevents the system from writing to that spot again following a reboot.
The HP Z820, which is suitable for customers in oil and gas, mechanical computer-aided design (CAD), mechanical computer-aided engineering, medical, video and animation, provides up to 16 processing cores, up to 512GB of ECC memory, up to 14TB of high-speed storage and up to dual NVIDIA Quadro 6000 graphics.
The HP Z800 Workstation offers Intel Xeon 5500 and 5600 series processors, providing up to 12 processing cores, up to 192 gigabytes of ECC memory, up to 10 terabytes of high-speed storage and up to dual NVIDIA Quadro FX 5800 graphics.
Each node can be configured with up to 2 GB of DDR2 ECC memory.
Other features include dual integrated 10/100/1000 GbE NICs and video, five PCI slots and DDR2 unbuffered ECC memory with four sockets, providing memory capacity of up to 80GB.
The system includes RAID forodata security, and uses ECC memory.
6 GHz, and up to 2 GB DDR SDRAM ECC memory with a 6.
The NetFRAME 4620 includes Intel's 7520 chipset, up to 16GB of DDR2 400 ECC memory for improved performance, and onboard RAID 5 capability which allows for additional redundancy without utilizing an extra PCI slot.
With dual G5 processing power and up to 8GB of ECC memory, Xserve G5 is affordable, easy to manage and easy to cluster.
Features include 30 Gigaflops of processing power per system, a new system controller with up to 8Gb of PC3200 ECC memory and three hot-plug Serial ATA drive modules for 750GB of storage.