Tech Docs
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Self-Monitoring, Analysis, and Reporting Technology (SMART) is a monitoring system embedded in computer hard disk drives (HDDs) and solid-state drives (SSDs). Its primary function is to detect and report various indicators of drive reliability, aiming to anticipate potential hardware failures. When SMART data suggests an imminent drive failure, software on the host system can…
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A firewall is a security mechanism, either hardware or software-based, designed to regulate network traffic by permitting or denying data packets based on security rules. According to Wikipedia, firewalls are essential in protecting computer networks from unauthorized access, malware, and data breaches by creating a boundary between trusted internal networks and untrusted external sources like…
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In the context of embedded systems and hardware-level communication, UART, or Universal Asynchronous Receiver-Transmitter, is a fundamental protocol for serial data transfer. It allows devices to communicate by transmitting data one bit at a time in a sequential fashion. Unlike synchronous protocols, UART does not rely on a shared clock signal but instead uses a…
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IPv6 is the latest version of the Internet Protocol, designed to replace IPv4 due to the exhaustion of available IPv4 addresses. IPv6 provides a vastly larger address space by using 128-bit addresses instead of the 32-bit format used by IPv4. This means IPv6 can support approximately 340 undecillion (3.4 x 10³⁸) unique addresses, which is…
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The motherboard is the central backbone of any computer system, acting as the main printed circuit board (PCB) that connects and allows communication between all essential components. It houses the CPU socket, RAM slots, chipset, power connectors, and expansion slots such as PCIe, enabling the installation of graphics cards, network cards, or storage controllers. Motherboards…
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The Domain Name System (DNS) is like the phonebook of the internet. It translates human-friendly domain names such as www.google.com into IP addresses like 142.250.190.78, which computers use to locate and communicate with each other across networks. Without DNS, users would need to memorize long strings of numbers to access websites, making the internet much…
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Add-on cards, also known as expansion cards, are hardware components inserted into expansion slots on a motherboard—typically PCIe slots—to extend a server’s functionality. These cards enable specialized performance beyond the system’s native capabilities, including enhanced network connectivity, accelerated processing, and advanced storage management. Common types include GPU cards for high-performance computing, network interface cards (NICs)…
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Storage devices are critical components in computing, used to retain digital information permanently or temporarily. The two most common types of internal storage are Hard Disk Drives (HDDs) and Solid-State Drives (SSDs). HDDs use spinning magnetic platters and read/write heads to store data and are valued for their high storage capacities at lower cost per…
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Selecting and installing RAM (Random Access Memory) starts with identifying the system’s compatibility requirements. The first step is to determine the form factor—most desktop motherboards use DIMM (Dual Inline Memory Module), while laptops use the smaller SO-DIMM (Small Outline DIMM). Next, determine the DDR generation your system supports—DDR3, DDR4, or DDR5. These are not backward…
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Understanding cable types and their respective connectors is essential in modern IT environments, where the efficiency of data transmission depends on the correct physical medium. Common cable types include twisted pair (Ethernet), fiber optic, coaxial, HDMI, and USB, each serving unique roles in networking and communication systems. Ethernet cables, such as Cat5e, Cat6, and Cat6a,…
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The shutdown command in Linux safely powers off or reboots a system, allowing users and administrators to schedule the shutdown after a certain time interval or at a specific time. It ensures the system terminates all processes correctly and prevents data corruption. The command accepts various parameters to specify time and behavior, with the option…
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The Avalon Nano 3S, developed by Canaan, is a compact Bitcoin miner designed for home use, combining cryptocurrency mining with heating functionality. It offers a hashrate of 6 terahashes per second (TH/s) while consuming a maximum of 140 watts of power. The device operates on an input voltage of 28 volts and supports frequencies of…
