Arduino SizeOf

¿De qué tamaño son los datos en el Arduino Uno?

#include <stdio.h>

#define FOO(x) Serial.println(String("sizeof(" #x ")=") + String(sizeof(x)))

void setup() {
  Serial.begin(9600);
}

void loop(void) {
  Serial.println("\nArduino sizeof, (C) 2014 'Aztec Eagle' Turbo");
  FOO(char);
  FOO(short);
  FOO(int);
  FOO(long);
  FOO(long long);
  FOO(void*);
  FOO(float);
  FOO(double);
  FOO(long double);
  delay(1000);
}

Esto da como resultado:

Arduino sizeof, (C) 2014 'Aztec Eagle' Turbo
sizeof(char)=1
sizeof(short)=2
sizeof(int)=2
sizeof(long)=4
sizeof(long long)=8
sizeof(void*)=2
sizeof(char*)=2
sizeof(int*)=2
sizeof(float)=4
sizeof(double)=4
sizeof(long double)=4

perl -V

Summary of my perl5 (revision 5 version 10 subversion 0) configuration:
  Platform:
    osname=linux, osvers=2.4.30, archname=mips-linux-uclibc
    uname='linux merope 2.4.30 #1 di 23. jan 15:23:42 cet 2007 mips unknown unknown gnulinux '
    config_args='-der'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=undef, usemultiplicity=undef
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=undef, use64bitall=undef, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='mips-openwrt-linux-uclibc-gcc', ccflags ='-Os -pipe -mips32r2 -mtune=mips32r2 -fno-caller-saves -mno-branch-likely -fhonour-copts -Wno-error=unused-but-set-variable -msoft-float -DUSE_CROSS_COMPILE -I/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/target-mips_r2_uClibc-0.9.33.2/usr/include -I/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/target-mips_r2_uClibc-0.9.33.2/include -I/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/toolchain-mips_r2_gcc-4.6-linaro_uClibc-0.9.33.2/usr/include -I/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/toolchain-mips_r2_gcc-4.6-linaro_uClibc-0.9.33.2/include',
    optimize='-O2',
    cppflags='-Os -pipe -mips32r2 -mtune=mips32r2 -fno-caller-saves -mno-branch-likely -fhonour-copts -Wno-error=unused-but-set-variable -msoft-float -DUSE_CROSS_COMPILE -I/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/target-mips_r2_uClibc-0.9.33.2/usr/include -I/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/target-mips_r2_uClibc-0.9.33.2/include -I/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/toolchain-mips_r2_gcc-4.6-linaro_uClibc-0.9.33.2/usr/include -I/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/toolchain-mips_r2_gcc-4.6-linaro_uClibc-0.9.33.2/include'
    ccversion='', gccversion='3.4.3', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=4321
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=8
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='mips-openwrt-linux-uclibc-gcc', ldflags =''
    libpth=/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/target-mips_r2_uClibc-0.9.33.2/lib /home/build/builddir/all-in-one/dogstick/trunk/staging_dir/target-mips_r2_uClibc-0.9.33.2/usr/lib
    libs=-lgdbm -ldb -lnsl -ldl -lm -lcrypt -lutil -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc 
    libc=, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version=''
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -rdynamic -L/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/target-mips_r2_uClibc-0.9.33.2/usr/lib -L/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/target-mips_r2_uClibc-0.9.33.2/lib -L/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/toolchain-mips_r2_gcc-4.6-linaro_uClibc-0.9.33.2/usr/lib -L/home/build/builddir/all-in-one/dogstick/trunk/staging_dir/toolchain-mips_r2_gcc-4.6-linaro_uClibc-0.9.33.2/lib'


Characteristics of this binary (from libperl): 
  Compile-time options: PERL_DONT_CREATE_GVSV PERL_MALLOC_WRAP
                        USE_LARGE_FILES USE_PERLIO
  Built under linux
  Compiled at Sep 12 2013 16:49:59
  @INC:
    /usr/lib/perl5/5.10
    .