Microchip PIC16C6x family datasheet, a 2.64 MB PDF covering several related 8-bit OTP or EPROM microcontrollers grouped under one x placeholder.

Datasheet for the Microchip PIC16F870 and PIC16F871 flash microcontrollers, a 2.76 MB PDF.

Microchip datasheet for the PIC16F87xA family of 8-bit flash microcontrollers, supplied as a 3.92 MB PDF.

Microchip datasheet for the PIC12C67x series, small 8-pin EPROM/OTP microcontrollers with analog-to-digital conversion, in a 1.90 MB PDF.

Small 113 KB PDF for the Arduino Ethernet Shield, most likely the board schematic or a brief reference sheet rather than a lengthy datasheet.

Full datasheet for the Atmel ATmega169 8-bit AVR microcontroller, with the name indicating coverage of silicon revisions A through E.

Datasheet for the Atmel ATxmega A1 series, the 100-pin members of the AVR XMEGA family.

Datasheet in PDF form for the ICL8069, a low-voltage bandgap voltage reference diode of about 1.2 V, historically made by Intersil.

MAX038 datasheet in PDF, covering the Maxim high-frequency precision function generator chip able to produce sine, square and triangle waveforms.

Datasheet for the Prolific PL-2303HX USB-to-serial UART bridge controller, a chip found in many USB-RS232 and USB-TTL adapters and some embedded devices.

Component datasheet in PDF form, 346 KB, identified only by the document number 6224 in its name.

Datasheet in PDF format numbered 6262, about 1.05 MB, with no part number or brand stated in the file name.

Datasheet for the LM741, the classic general-purpose operational amplifier found in countless analog circuits, supplied as a 148 KB PDF.

Datasheet for the 79LXX series, low-power fixed negative three-terminal regulators typically rated around 100 mA, supplied as a 157 KB PDF.

Datasheet in PDF form, 246 KB, named only by the document number doc6272, so the file name gives no hint of the exact component.

PDF datasheet of 634 KB carrying only the reference doc6258, which does not reveal the device it covers.

Datasheet for the Atmel AT89S52, one of the most popular 8051-compatible microcontrollers, with 8 KB of ISP flash, 256 bytes of RAM and three 16-bit timers.

PDF datasheet for the Atmel AT89S51, an 8051-compatible microcontroller with 4 KB of in-system programmable flash and 128 bytes of RAM.

Datasheet for the Atmel AT89C1051U, a 20-pin 8051-compatible microcontroller with 1 KB of flash; the U version adds a UART and second timer compared with the basic…

Application note for C51 parts, the common shorthand for 8051-family microcontrollers, provided as a 492 KB PDF.

Firmware dump for the Panasonic TX-PR42ST50 plasma television, board TNPH0989, from a 25Q40 SPI flash.

BIOS archive of roughly 7.5 MB for an HP Spectre x360 convertible, written in the name as spectre x30 covertible; no exact generation, model number or board number is…

Generic setup package, 1.91 MB in ZIP format, whose name gives no model, brand or version.

Very small 18.0 KB ZIP named T-840 with a string that likely encodes the date 12 December 2016, but the device type and brand are not stated.

Openbox receiver dump built on the GX3235S chipset with an R850 tuner, marked 148, version V1.3 dated 23 May 2017, intended for a 25Q32 flash chip, a 32 Mbit SPI part.

Zip archive called cls, about 10.7 MB, whose name reveals nothing about the device, board or contents.

Boardview in .cad format for the Compal LA-M191P motherboard, project code HH4U4, revision 1B, about 867 KB.

Schematic for Compal motherboard LA-L191P, project code GH53G, revision 1A, in a 5.27 MB PDF.

Firmware archive simply called ssd, 12.0 MB in 7z format. The name gives no brand, controller, model or version, so the content cannot be identified without extracting…

SM7250 processor schematic in PDF format, 1.37 MB, with no handset model or revision named.

Boardview data for the ASUS UL80V motherboard, revision 2.0, packed in a small 146 KB ZIP archive.

Raw BIOS image in BIN format, 32 MB, with a name suggesting a working output image but giving no model, brand or board number.

Boardview for Fujitsu laptop motherboards DAFH2AMB6G0 and DA0FH2MB6E0 at revision E, packed in a 97.7 KB ZIP.

Generic 16.0 MB binary named outimage, a name typical of output from an editing or building tool, with no device, brand or board information given.

ZIP archive for an Inventec / Foxconn board 6050A3645606, with name tokens g835lx and G635-pmv-gbm that likely reference the model or project, though they are not…

Boardview for the Quanta H98 motherboard, board number DAH98MB38B0 at revision B. The DA prefix followed by a project code and MB is the standard Quanta naming pattern…

Boardview for the ASUS ET2311I all-in-one motherboard, revision 1.3, packed in a ZIP file.

Schematic PDF named only T135, around 768 KB, with no brand listed. It may relate to the Toshiba Satellite T135, but the name alone cannot confirm that, nor any board…

Schematic PDF for a board called MANAUS 10AD, 503 KB. Manaus is an Inventec project name, with Manaus 10 boards used in Toshiba Satellite notebooks, but the name does…

Firmware archive named STB524HD, 2.93 MB, with no brand or board details in the name. The name suggests a set-top box or satellite receiver model, although this cannot…