
The HP-75C and HP-75D were hand-held computers programmable in BASIC, made by Hewlett-Packard from 1982 to 1986.

HP-150 was a compact, powerful and innovative computer made by Hewlett-Packard in 1983. It was based on the Intel 8088 and was one of the world's earliest commercialized touch screen computers. Despite running customized MS-DOS versions 2.01, 2.11 and 3.20, the machine was not IBM PC compatible. Its 8088 CPU, rated at 8 MHz, was faster than the 4.77 MHz CPUs used by the IBM PC of that period. Using add-on cards, main memory could be increased from 256 KB to 640 KB. However, its mainboard did not have a slot for the optional Intel 8087 math coprocessor due to space constraints. An HP-150 with an optional hard disk was called HP Touchscreen MAX.

The HP 250 was a multiuser business computer by Hewlett Packard running HP250 BASIC language as its OS with access to HP's IMAGE database management. It was produced by the General Systems Division (GSD), but was a major repackaging of desktop workstation HP 9835 which had been sold in small business configurations. The HP9835's processor was initially used in the first HP250s.

The HP 300 "Amigo" was a computer produced by Hewlett-Packard (HP) in the late 1970s based loosely on the stack-based HP 3000, but with virtual memory for both code and data. The HP300 was cut-short from being a commercial success despite the huge engineering effort, which included HP-developed and -manufactured silicon on sapphire (SOS) processor and I/O chips.

The HP 2100 is a series of 16-bit minicomputers that were produced by Hewlett-Packard (HP) from the mid-1960s to early 1990s. Tens of thousands of machines in the series were sold over its twenty-five year lifetime, making HP the fourth largest minicomputer vendor during the 1970s.

The HP 2640A and other HP 264X models were block-mode "smart" and intelligent ASCII standard serial terminals produced by Hewlett-Packard using the Intel 8008 and 8080 microprocessors.

HP 9000 is a line of workstation and server computer systems produced by the Hewlett-Packard Company (HP). The native operating system for almost all HP 9000 systems is HP-UX, which is based on UNIX System V. The HP 9000 brand was introduced in 1984 to encompass several existing technical workstation models previously launched in the early 1980s.

The HP 64000 Logic Development System, introduced 17 September 1979, is a tool for developing hardware and software for products based on commercial microprocessors from a variety of manufacturers. The systems assisted software development with assemblers and compilers for Pascal and C, provided hardware for in-circuit emulation of processors and memory, had debugging tools including logic analysis hardware, and a programmable read-only memory (PROM) chip programmer. A wide variety of optional cards and software were available tailored to particular microprocessors. When introduced the HP 64000 had two distinguishing characteristics. First, unlike most microprocessor development systems of the day, such as the Intel Intellec and Motorola EXORciser, it was not dedicated to a particular manufacturer's microprocessors, and second, it was designed such that up to six workstations would be connected via the HP-IB (IEEE-488) instrumentation bus to a common hard drive and printer to form a tightly integrated network.

HP Inc. targets their line of business desktop computers for use in the corporate, government, and education markets. HP operate their business desktops on minimum 12-month product cycle and directly compete with Dell OptiPlex, Acer Veriton and Lenovo ThinkCentre.
The HP Compaq TC1100 is a tablet PC sold by Hewlett-Packard that was the follow-up to the Compaq TC1000. The TC1100 had either an Intel Celeron or an Intel Pentium M chip set and could be upgraded up to 2 gigabytes of memory. The switch from Transmeta Crusoe processors to the Pentium M and the ability to add memory was welcomed after numerous complaints about the poor performance of the TC1000. The TC1100 was the last version from HP in this style of tablet. It was replaced by the HP Compaq TC4200, which featured a more traditional one-piece design.

The HP Compaq TC4400 is a tablet-style personal computer. It can be used in the position of a normal laptop or the screen can be turned and folded down for writing.

The HP Compaq TC4200 is a Tablet PC that was released on March 1, 2005 and has since been discontinued. It is believed to be the successor to the TC1100, which was discontinued in Q4 of 2005. The TC4200 boasted many powerful features that could be found on mid to high-range laptops and competing tablets during its production. The TC4200 was superseded by the similar HP Compaq TC4400.

HP Elite x3 is a premium Windows 10 Mobile smartphone produced by Hewlett-Packard. It was officially announced on February 21, 2016, and released later that year.

The HP-HIL is the name of a computer bus used by Hewlett-Packard to connect keyboards, mice, trackballs, digitizers, tablets, barcode readers, rotary knobs, touchscreens, and other human interface peripherals to their HP 9000 workstations. The bus was in use until the mid-1990s, when HP substituted PS/2 technology for HIL. The PS/2 peripherals were themselves replaced with USB-connected models.

The HP Precision bus is the data transfer bus of the proprietary Hewlett Packard architecture HP 3000 and later many variants of the HP 9000 series of UNIX systems. This bus gives a 32 bits data path with an 8 MHz clock. It supports a maximum transfer rate of 23 MB/s in burst mode. That bus can handle up to three, psi standard, expansion cards in the 920, 922 and 932 series and up to five cards in the 948 and 958 series.
The HP200A was the first product made by Hewlett-Packard and was manufactured in David Packard's garage in Palo Alto, California.

The HP-IL, was a short-range interconnection bus or network introduced by Hewlett-Packard in the early 1980s. It enabled several devices such as printers, floppy disk drives, tape readers, etc. to be connected to programmable calculators such as the HP-41C, HP-71B and HP-75C/D, the 80-series and HP-110 computers, as well as generic ISA bus based PCs.

The HP Integral PC was a portable UNIX workstation computer system produced by Hewlett-Packard, launched in 1985 at a price of £5450. It was based on the Motorola 68000 microprocessor and ran the HP-UX 1.0 operating system.

LightScribe is an optical disc recording technology that was created by the Hewlett-Packard Company. It uses specially coated recordable CD and DVD media to produce laser-etched labels with text or graphics, as opposed to stick-on labels and printable discs. Although HP is no longer developing the technology, it is still maintained and supported by a number of independent enthusiasts.

The Hewlett-Packard series 80 of small scientific desktop computers was introduced in 1980, beginning with the popular HP-85 targeted at engineering and control applications. They provided the capability of the HP 9800 series desktop computers with an integrated monitor in a smaller package including storage and printer, at half the price.

The HP Slate 21 is a computer developed by Hewlett-Packard that runs the Android operating system. It was announced on June 24, 2013, via HP's blog The Next Bench with a price of $399.00, and released in September that year. It is described as either an all-in-one desktop computer or a large tablet computer.

The HP TouchPad is a tablet computer that was developed and designed by Hewlett-Packard. The HP TouchPad was launched on July 1, 2011, in the United States; July 15 in Canada, United Kingdom, France, Germany; and August 15 in Australia.

HP TouchSmart is a series of tablet PC laptops and touchscreen all-in-one desktop computers designed by HP. It features various Intel or AMD processors and runs Windows Vista or Windows 7 as standard.

HP Vectra was a line of business-oriented personal computers manufactured by Hewlett-Packard. It was introduced in October 1985 as HP's first IBM-compatible PC.