The components in a laptop are similar to the components in a desktop computer. They both have a RAM, HDD, CPU, Motherboard etc.One of the differences between them is that a laptop has a battery while a computer does not. There are many other differencies and similarities such as:

• A laptop can have an integrated keyboard while a pc does not.
• They both have an ethernet NIC and a wireless NIC
• They both have intergrated drive controllers except the pc has one with the adapter card as well