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Komok [63]
3 years ago
14

Which of the following would you use to search a table in Excel?

Computers and Technology
2 answers:
Sladkaya [172]3 years ago
6 0

Answer:

C. Find And Select

Explanation:

I hope this help you

snow_tiger [21]3 years ago
3 0

Answer:

<em>Which function would you use if you wanted to count the number of values, but ignore the cells that have text or are empty</em>

<em>Which function would you use if you wanted to count the number of values, but ignore the cells that have text or are emptya COUNT</em>

<em>Which function would you use if you wanted to count the number of values, but ignore the cells that have text or are emptya COUNTb. COUNTA</em>

<em>Which function would you use if you wanted to count the number of values, but ignore the cells that have text or are emptya COUNTb. COUNTAc. COUNTBLANK</em>

<em>Which function would you use if you wanted to count the number of values, but ignore the cells that have text or are emptya COUNTb. COUNTAc. COUNTBLANKd. COUNTVALUES</em>

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Discuss the DMA process​
shusha [124]

Answer:

Direct memory access (DMA) is a process that allows an input/output (I/O) device to send or receive data directly to or from the main memory, bypassing the CPU to speed up memory operations and this process is managed by a chip known as a DMA controller (DMAC).

Explanation:

A defined portion of memory is used to send data directly from a peripheral to the motherboard without involving the microprocessor, so that the process does not interfere with overall computer operation.

In older computers, four DMA channels were numbered 0, 1, 2 and 3. When the 16-bit industry standard architecture (ISA) expansion bus was introduced, channels 5, 6 and 7 were added.

ISA was a computer bus standard for IBM-compatible computers, allowing a device to initiate transactions (bus mastering) at a quicker speed. The ISA DMA controller has 8 DMA channels, each one of which associated with a 16-bit address and count registers.

ISA has since been replaced by accelerated graphics port (AGP) and peripheral component interconnect (PCI) expansion cards, which are much faster. Each DMA transfers approximately 2 MB of data per second.

A computer's system resource tools are used for communication between hardware and software. The four types of system resources are:

  •    I/O addresses
  •    Memory addresses.
  •    Interrupt request numbers (IRQ).
  •    Direct memory access (DMA) channels.

DMA channels are used to communicate data between the peripheral device and the system memory. All four system resources rely on certain lines on a bus. Some lines on the bus are used for IRQs, some for addresses (the I/O addresses and the memory address) and some for DMA channels.

A DMA channel enables a device to transfer data without exposing the CPU to a work overload. Without the DMA channels, the CPU copies every piece of data using a peripheral bus from the I/O device. Using a peripheral bus occupies the CPU during the read/write process and does not allow other work to be performed until the operation is completed.

With DMA, the CPU can process other tasks while data transfer is being performed. The transfer of data is first initiated by the CPU. The data block can be transferred to and from memory by the DMAC in three ways.

In burst mode, the system bus is released only after the data transfer is completed. In cycle stealing mode, during the transfer of data between the DMA channel and I/O device, the system bus is relinquished for a few clock cycles so that the CPU can perform other tasks. When the data transfer is complete, the CPU receives an interrupt request from the DMA controller. In transparent mode, the DMAC can take charge of the system bus only when it is not required by the processor.

However, using a DMA controller might cause cache coherency problems. The data stored in RAM accessed by the DMA controller may not be updated with the correct cache data if the CPU is using external memory.

Solutions include flushing cache lines before starting outgoing DMA transfers, or performing a cache invalidation on incoming DMA transfers when external writes are signaled to the cache controller.

4 0
3 years ago
Read 2 more answers
Henry is creating code In JavaScript to run calculations on extremely small numbers. How can he use MIN_VALUE as validation in t
QveST [7]

In creating code in JavaScript to run calculations on extremely small numbers, MIN_VALUE as validation in the program can be use to check the lowest value JavaScript can handle

Number.MIN_VALUE returns the smallest positive numeric value representable in JavaScript.  It is the number more closer to zero. The value is approximately 5e⁻³²⁴.

Using Number.MIN_VALUE, the value can be printed as follows:

val = Number.MIN_VALUE;

console.log(val); // 5e-324

Therefore, In creating code in JavaScript to run calculations on extremely small numbers, MIN_VALUE as validation in the program can be use to check the lowest value JavaScript can handle.

learn more on JavaScript here: brainly.com/question/13041378?referrer=searchResults

3 0
3 years ago
The basic components of cartridges and shotshells are similar. Shot pellets and a bullet are examples of which basic component?
Liono4ka [1.6K]
The answer is projectile. Handguns and rifles use a cartridge having a single projectile or bullet. Shotguns use a shot shell comprising either a single bullet or a big number of small projectiles (shot or pellets). Though, the basic components of cartridges and shot shells are alike.
5 0
3 years ago
MegaCorp MegaCorp is large manufacturing firm that operates 5 factories in Dallas, 4 factories in Los Angeles, and 5 factories i
Ivenika [448]

Answer:

Recommended is frame relay architecture with a local loop at each factory supporting the frame relay service connection to the network provider's POP

Explanation:

Frame Relay can be seen as WAN protocol that is said to often operate at both the physical and data layers link of the OSI reference model due to it high-performance and due to the fact that FRAME RELAY are as well use across Integrated Services Digital Network (ISDN) interfaces in which they are designed for cost-efficient data transmission in order to enable effective intermittent traffic between local area networks (LANs) and endpoints in wide area networks (WANs) which is why frame contains all the information necessary to route it to the correct destination.

Therefore type of BN and WAN architecture and WAN service i would recommend based on the above information is FRAME RELAY ARCHITECTURE with a local loop at each factory supporting the frame relay service connection to the network provider's POP.

8 0
3 years ago
Explain the function of different flags in the 8086<br>​
posledela

Answer:

A flag is a piece of fabric (most often rectangular or quadrilateral) with a distinctive design and colours. It is used as a symbol, a signalling device, or for decoration.8086 has 16-bit flag register, and there are 9 valid flag bits.The FLAGS register is the status register in Intel x86 microprocessors that contains the current state of the processor. This register is 16 bits wide. Its successors, the EFLAGS and RFLAGS registers, are 32 bits and 64 bits wide, respectively. The wider registers retain compatibility with their smaller predecessors.

5 0
3 years ago
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